At first this game didn't really catch me; A Chunnibyou Scientist accidently makes a time machine and makes all his friends wishes come true. Then Chapter 5 hits and everything gets fucked. Then this turned into a perfect tragedy as this scientist becomes actually mentally unstable as he has to systematically undo each of his friend's dreams to save his childhood friend. And then the Coup de Grace: you have to sacrifice the woman you love to save your childhood friend. I especially love that they stuck with a bittersweet kind of ending where even in the true ending where you can save both of them from dying, the girl you love still doesn't remember how you fell in love; its a perfect Bittersweet ending.