Reika is Motoki's long-distance girlfriend who barely shows up in the anime—just two episodes. In the show, she's dealing with study abroad commitments that keep pulling her away from Japan, and their relationship suffers for it. The second time she leaves, it's for a whole decade, but Motoki's apparently willing to wait it out. Fans often note how little screen time she gets despite being an actual love interest.
There's a supernatural twist: she's actually the reincarnation of the Great Youma Rikokeidā, though the anime doesn't make much of it.
The manga version of her story is completely different. She sticks around in Japan, goes to KO university alongside Motoki, and actually develops a friendship with Setsuna Meioh there. It's a much more grounded take on the character compared to the constant international separation of the anime.
Content compiled by AnimeList.moe from publicly available sources.
