See the game's page for the NSFW patches and more info. Also, Ouroboros is on sale at itch.io and MangaGamer!
John is a young man suffering from severe depression. As he loses his sense of purpose in life, he begins to see the world in unfocused gray. Just when he begins to lose all hope, John meets a girl... a very special girl.
Your every choice will impact both characters' mental states, changing their fate. John might reject Lizzie, succumb to his depression, or die violently. Lizzie might lose control and ruin her chances or become obsessed with shadowy conspiracies that may or may not exist. Or just maybe the two of them might be exactly what the other needs and their story could end in happiness...