This route is only playable after playing through Hisui's route. The difference in the beginning is that the girl Shiki wants to meet was the girl by the window. Like in the Hisui route, he assumes that Hisui is the girl by the window, passing over Kohaku. In this route Akiha defeats and kills SHIKI early, resulting in her absorbing some of his energy, becoming more aggressive. Akiha begins to pursue Shiki romantically, but is blocked by Shiki himself, who sees her more as his sister. She becomes angry with his growing relationship with Kohaku. As a result, she began hunting for victims on the streets at night in SHIKI's place because she can't control herself, with only Kohaku being aware of it.