Aoi Sawatari

沢渡 あおい

She is the ace of the school swim team. She is dating Minaguchi Kaoru. [Spoiler] Although she appears to be, as Kaoru puts it - " a perfect girlfriend," she later reveals a yandere personality, leaving him hundreds of messages over the course of a few days and becoming extremely paranoid and hysterical after seeing him with Oogawara. [/Spoiler] [Spoiler] It is implied that she and Kaoru met when they were younger, but Kaoru does not seem to remember. [/Spoiler]