>>3836538 (OP)
A celebrative game like Fire Emblem Engage. The MC is the heir of the warriors of light or something like that, living in some remote future wasteland that looks like botw hyrule. There was a war centuries ago that destroyed almost everything, as usual.
Someday the baddies attack your village and you uncover the shocking truth; now you go on a quest to defeat the final boss that is of course the heir of Chaos and you collect crystals along your journey. Each crystal contains a job and summons a character of the franchise related to that job (the monk crystal could be Zell or Sabin) that appears as some kind of spirit.
It will be turn-based with dating sim elements, you can date your party members and also your crystal spirits and take them on a date. If you max their social links, the spirit become a real character and now you can have Squall or Cloud in your party. At the end of the game you will have a party of past FF glories that barely interact with each other and just spout some chatgpt lines to give the impression of some kind of banter, and also keep repeating how much they want to suck the dick of the MC.
The dialogues and the plot will be entirely obtained through a chatgpt prompt, while the world will be crafted by smashing together genshin impact assets.