Why the hell didn't Chiyu just level up with Haruyuki and Taku to increase the power of her special move?

I am assuming that both Haruyuki and Noumi need to be in range of the time skill for it to work, but that would mean that Haru's HP bar and body should be healed as well, but they weren't.

The other possibility is that only Noumi needs to be hit by the move, which makes Chiyu's secrecy even more stupid. She could have just power leveled with Haru then shot Noumi then everything would be over, without there being any need for all that risk.

Chiyu said that all she did was for her plan, but she also mentioned that she only realized the real effect of her special move after she healed Noumi once. She really did side with Noumi (even if due to blackmail) once, but now she is acting innocent and claiming otherwise. Disgusting.

Noumi becoming retarded uke is stupid. I wanted him to suffer for his actions, not become happy.