Riko Saikawa
Saikawa started out as one of Kanna's classmates who wasn't exactly friendly at first. But that changed pretty quickly—she developed a crush on her, which became a constant joke throughout the series. The gag is that whenever Kanna and Saikawa have any kind of physical contact, Saikawa just completely melts, her face turning red as she experiences what can only be described as pure bliss.
Content compiled by AnimeList.moe from publicly available sources.
