* BadassDecay: Justified with Haruka in the fact that Kantarou is attempting to "humanize" him and whatnot.
* HoYay: Mainly in the manga, though still worthy of another overall HOOO BOY. The creators were aware of this and created a yaoi doujinshi of the series called ''Love Sick''.
* NightmareFuel: Episode 15.
* UglyCute: Muu-chan.