Sora Niimi

Sora is Kakerus younger sister and a firstyear student. She spends most of her spare time hanging out at the protagonists apartment often threatening to move in and sometimes makes him treat her to dinner. She has a selfish side but her dedication to her brother is undeniable. She enjoys teasing Miyako for her overlyserious demeanor and also for her occasional slipups. When Sora awakens to her powers she begins cooperating with Miyako and her brother on the investigation.