From Zanarkand

First of all, let's discuss the Jecht Sphere's.
The one at the Moonflow shows us the aftermath of when Jechy attacked the shoopuf. Jecht is apologetic and promises to never drink again, not wanting to embarrass his family back home.
There's one at the Travel Agency in Mi'hen, which shows the time Jecht wanted to attack the Chocobo Eater. This shows how similar Tidus and his dad actually are.
There's one next to the temple in Besaid. Braska enters the village, and Jecht comments on how small it is. Braska likes it and asks Auron to bring Yuna here when this is all over. It's small, but it tells us why Auron asked Kimahri to bring Yuna here.
Aboard the SS Liki from Besaid to Killika, they discuss getting Valefor, which seems to the last aeon for Braska, and then heading to Zanarkand. Auron seems more open to Jecht being from the place. Jecht appears to have accepted he's stuck in Spira at this point but has some thread of hope left. He tells Braska not to make his little girl cry.
In Luca, Jecht asks Braska if he recorded the last match as he wants to show it to Tidus when he gets home. Jecht hopes to make his son a star one day, even if Tidus wasn't good at it when he was young. Oddly enough, Jecht starts crying a little bit at the end.
The last one was back before the elevator to where we met Kinoc before Operation Mi'hen, and it's, fittingly, Auron's Sphere. It's Kinoc and Auron discussing the new leadership that Kinoc got. It was meant for Auron, but when he turned down the marriage, he lost it. Once you've collected all the spheres, Auron's last Overdrive, Tornado, is usable. That's cool and all, but who filmed some of these?
 
Second of all, I knocked out Omega Weapon last night. He poses no threat, which was mildly annoying. The power increase the Celestial Weapons give are massive and sudden. I went from dealing about 3000 damage to over the cap pretty fast. I forgot to use Kimarhi's Lancet on Omega, though, so I'll never see Nova now. But it did encourage me to rush through to the end of the game. That, and I wasn't having good luck with Bliztaball rewards for Wakka. Sorry buddy, but RNG screwed ya, ya?

But onward over the mountain! We left Bevelle last night and are ready to make the final push against Sin! Cid turns on the ship's sound system, and the Hymn begins to play! Everyone wonders if Shelinda did her job, but Brother quickly yells out that Sin's here. Tidus says, "we're going in," and by that, he means we're gonna get eaten. If need be, they'll rip open a new hole, which is a strange thing to do to your father. Cid's excited as we head for the ship's deck. We can hear all of Spira singing the Hymn, and the team promises to fulfill their end of the deal. Tidus shows Yuna the sphere she dropped on Gagazet and chucks it into the aether.

Before we can attack, Sin shows off his power. In a move that distorts the clouds, water, and even the moon around him, he gathers in energy and fires it off in seven directions. These don't seem to hit anything, but they leave scars on the planet thousands of miles long. The clouds are torn apart, the ocean is left, momentarily, as a massive ditch, and things begin to explode somehow as everything goes back to normal. What was the point of it, though? Sin then begins to end the showboating and attacks in full force. After each battle, Cid fires off the ship's big guns, knocking an arm off the floating whale. After the second one, though, the main gun breaks. Cid asks us to come back in to make a new plan, but Tidus overrides him. He suggests we finish this now by continuing to fight Sin before he regenerates. In a scene that changes based on the affection mechanics, a character will run up past Tidus and toss themselves off the deck. For me, it was Yuna, but everyone has a line. Tidus gets playfully upset, and the rest of the team follows. They all land on Sin, and a third battle begins with another core and a Sinspawn. Despite the additional mob, this is another easy battle if you've done too much grinding.

But I've gotten slightly ahead of myself. There are two battles against Sin, but both are barely worth mentioning at this point. The first is against his left arm. We're to attack the glowing blue point, and the battle works similarly to the fight against Evrae. Since we made so easy work of Omega, Sin poses an even tinier threat. Move us in close, and attack him with your strongest characters. I really wish I had Wakka's weapon, but Yuna's Holy did plenty of damage. Next up is the right arm, which is the exact same battle.
The third fight is against another core and a Spinspawn. The second mob deals damage but is just as quickly dispatched as the rest of Sin.

The camera cuts far away from Sin as he begins to fall from the sky. He lands just outside of Bevelle. The team returns to the cockpit. Cid seems pleased, but everyone knows we're not done. "We need to beat the guy inside Sin." We can talk to our comrades again, who say nothing of value. Find Yuna on the deck to continue. She'll wonder what Bahamut meant when he asked her to summon them. The cogs start turning in her head. Yevon merges with an aeon, and Sin is reborn. But it'll be small and weak, right? That should give us time to defeat them without the Final Aeon. Yuna has some uneasy feelings about us killing her aeon fiends, but she starts to wonder more about the dreams of the fayth. She asks Tidus if he'll go away, but Tidus doesn't get a chance to answer. Sin sprouts insect wings on his back and flies up to the skies, and he perches on the tower of Bevelle.

The two return to the cockpit, where Auron says, "Jecht is waiting for you." Cid has no idea what to do, but Tidus tells him to take us in, and we'll do the rest. Everyone is pumped and behind the plan. Return to the deck again, and Sin will take to the skies. We now fight the body of Sin himself in a fight that's nearly identical to the others we just did. We get three turns to prepare, though, but I only need one to cast Hastega, giving me all the edge I need. After the battle, Sin's head begins to dissolve and explode in blue light. The airship starts to travel into the hole we made and gets surrounded by purple mist and pyreflies. And then we hear the laugh of a dead man, and we pass through the eye of Seymour.

We then walk through the shallow lake with no map. We have to find our way through, but it isn't too hard or long. Find the glowing Yevon symbols and follow the light tunnels they make. There are a few treasures off the beaten paths, but once you see them, you should have an idea of how to get to them. We keep walking until we reach a grand staircase. At the top is our long lost friend Seymour...again. He keeps talking about the same stuff he has been all game and says he'll control Sin. A fight breaks out. I didn't one-shot Omnis, but I did three-shot him. I had Auron cast Armor Break, Tidus used Energy Rain, and then I had Wakka use his Attack Slots Overdrive. I don't know Omnis' gimmick, but I liked his fancy rubric's switch things. After he beat him...again, Yuna finally sends him as he tells us Spira will join him in sorrow soon.

Beyond Seymour is the City of the Dead, a path with several hidden treasures. If you see a blue glyph on the ground, you can activate them, and they'll take you to one to three treasure chests. There's a green glyph wall at the start, but I didn't bother with that. You can kill thirty-five mobs (not battles), but most of the fights only have one enemy in them, and I was out of patience. The reward is Level Four Key Sphere, which I didn't even need. The second save point is the point of no return for the game. As you walk north from it, a building will fall in front of us. If you've done everything in Spira, you can continue, but this is your last chance! I finished up the Calm Lands Arena getting everything Inside Sin and giving Wakka's stuff one final chance at showing up. Neither of his two Overdrives appeared in eight games, so I had to call it. If we return to the airship now, our friends say nothing of value. Auron says he wants to see Jecht one last time before he fades, but that's all worth noting.

Inside this building is the place we saw Luzzu and the rest of the Crusaders after Operation Mi'hen. We have to find nine treasures, for some reason, to advance. If we get hit by a spiked pillar, a fight happens with a random Inside Sin mob. The items aren't good, and I'm confused. Regardless, once you've gotten them all, we're teleported to the place we first went to when we got sucked into Spira. We're above a ruined Zanarakand, and I just now figured out why we were there.
 
But, before us stands Jecht. As Tidus walks closer, Jecht tells Auron he's late and says how big his son has gotten. Not a lot of muscle, though. He tries to ask his son questions that a father who hasn't seen his son in ten years would ask, but how do you make that not awkward? Jecht says a joke I didn't get but upset Tidus. Tidus, fighting back the tears, tells his dad he hates him. Jecht laughs it off and accepts his fate. He can't hear the Hymn anymore, indicative that he's going to be fully absorbed soon. He warns the party that he won't be able to hold back in the fight. Tidus, still fighting the tears, wants to get this over with now. Jecht does some stuff to make himself glow. Tidus runs up to him but can't reach him in time before Jecht jumps off a ledge. Light comes from behind him that travels through the city, turning on all the lights in the place.

"Otherworld" begins to play again as a massive flaming claw replaces where Jecht once stood. The claw pulls up the rest of Braska's Final Aeon, the final, real boss of Final Fantasy X. This is a two stage boss, but I did way too much grinding to make them meaningful. The Pagodas on either side of BFA can heal and charge the Overdrive gauge. If Tidus talks, he can reset that gauge, though. Other than the pagodas, which are easily killed with anything that can reach, there aren't any gimmicks. Attack, attack, and attack!
The second stage is much of the same, except BFA has a giant sword and more HP. I tried to bring up some aeons here, but they were quickly killed. The Pagodas seem to come back far more often in stage two. Sadly, the Magus Sisters' Sandy got the final kill. A bit anti-climactic, yeah?

Braska's Final Aeon drops his sword as a red and black spirit flies out of its' back. Jecht returns to normal for a moment as Tidus runs up to him. Jecht says "crying" four times in four seconds, all at his son's expense. Tidus says, "I hate you, dad," one more time before both dreams realize this fight isn't over. Tidus then tells his dad, "For the first time, I'm glad to have you as my father." Yuna tries to do something, but Jecht, accompanied by Bahamut, tells her to call the aeons! Jecht turns into pyreflies as the spirit attacks us.

We're teleported to a bigger version of BFA's sword. The spirit turns into a roach/spider looking thing, which is the most parasitic thing I've ever seen. Fitting. From here on are battles we can't lose. We have the auto-life effect on us, which never fades, even if we die. The goal here is to kill our aeon friends. When we summon them, they get possessed by Yu Yevon, the parasite thing floating around. I went down the line in reverse order of when I got them. The Magus Sisters, being three, I had to kill with Anima's Oblivion. Every other aeon went down in one hit to Auron's Masamune. Shiva was the hardest because we couldn't hit her, so Yuna had to use Holy. I saved Bahamut for last, seeing as he's the most story relevant aeon. Nothing special happened. I don't know if these fights have set HP or if they're based on how much you've empowered them. The pagodas are also here, but I don't know if they can be killed. They have more than 99999 HP, I know that. They have the same purpose as they did in the final fight. Between each battle, we see Yuna is in pain. We can see the sorrow on her face as we slay everything she's worked hard to obtain. Our entire journey was gathering them, fighting alongside them, and making them more powerful. Fortunately, their goals and ours are still the same, even if it's a bit more macabre now.

After we've beaten the aeons, Tidus takes the group aside and tells them this is the last time we'll fight together. Lulu gets mad, and Yuna looks even more worried than before. He never says why, but he tells them he'll disappear after they beat Yu Yevon. Yu Yevon counters every attack with a heal that tops out at 9999. Holy is doing over 40000, and Auron and Tidus do close to 15000. You can break his armor and magical defense to aid you, so why not do it? The only attack I saw was a massive gravity spell, but gravity spells can't kill anything in Final Fantasy.

With Yuna hitting the final blow, the pagodas surround and merge with Yu Yevon. The three of them emit a blinding light with black particles spewing from it. We've won.

The scene shifts to Besaid. We see the Aurochs, O'aka, Wantz, Lucil, Elma, and Gotta watching the battle playout, I guess. This reminds me, Clasko was on the ship to Killika as the resident Chocobo expert. Everyone salutes as the camera runs towards the temple, past Maechen and a monk, and on to the cloister. We see the light the fayth usually emanates dim, and the vibrant colors turn a normal orange/brown hue. The soul trapped in the fayth is finally dead. We see the same thing happen for Shiva and finally for Bahamut as the Mysterious Boy fades away.

We return to the scene of the final fight. We see Yuna performing The Sending for whatever is around. Pyreflies emanate from Auron, and he tells her, "don't stop." "Auron's Theme" plays for the last time as he gives Kimarhi a fist bump to his chest, gives the rest of the guardians a look, draws his sword, and tells us, "this is your world now." He accepts his death and turns into pyreflies.

The final CGI scene takes place on the deck of the airship. Yuna is performing The Sending on all of the aeons. The body of Sin drops, and everything turns into a beautiful mosaic of color when they turn to pyreflies and other magical entities. We shift to the giant fayth on Gagazet as the colors there drain out as well. The magic water feature around the fayth begins to stop working as we zoom in to reveal the citizens of Zanarkand, one of whom is Tidus. We cut back to him, in real time, as he begins to fade. Yuna continues to grieve, and Tidus tells her, "it's time to go," and he apologizes for not being able to show her Zanarkand. Yuna runs into his arms one more time, but he's already lost his ability to be physically touched. She lies there crying, and he does as well. She gets up and says, "I love you," which is very blunt for a JRPG. I'm not sure I've heard it very often from a main character. I've read she says "thank you" in the Japanese version, which is boring. Tidus does his best to put his arms around her, but as the sun starts to rise, he says his final farewells and jumps off the ship. He sees the images of Braska, Auron, and high fives Jecht as the screen goes black.

Yuna is heard whistling, trying to get Tidus' attention, until Lulu tells her it's time. We're in Luca, and Yuna gives a speech, with her guardians behind her, discussing the Eternal Calm. She talks of loss: home, dreams, and friends. She talks of rebuilding in a post-Sin world. "Spira is ours again." If we work together, we make new homes...and new dreams. She talks of the future. She asks everyone to never forget the people...and dreams we've lost as we see memories of her and Tidus.

"Suteki Da Ne" plays as the credits roll. There's a post scene where Tidus wakes up in a vast ocean and swims to the top. He's smiling, but we don't see anymore.

"To Zanarkand" plays as we see "The End."