>>719906298
There’s a happy ending route called SF that has a lot of ass pull lore that clearly wasn’t part of the main scenario, and it’s generally a terrible route despite its nice conclusion. It’s tied to Mystery. That’s why there’s a lock.
Just doing ending 001 and a few of the better routes, like Retsnom and Multiple Eitos, is the way to go. Kodaka made a game like he usually does, and then spent the rest of the dev time having several other people staple shit onto it. He wasn’t even aware of everything that was written for game until late in development. The ones he wrote or supervised are usually the better ones.