I think I've found the bug where the evil route mixes with the good route and completely breaks the game... I'll try to release a fix so that doesn't happen, but the only solution would be to load to a save before that break/bug or start over.
Found the bug, if you decide not to continue the fight against Susamaru and instead you get to Amane's mansion when you get back the game will skip from the mission against Kanao, Muu and Zeniko to the mission against Rui's familly which requires that you talk to Shinobu but you cant without getting Kanao.