Hayase

she is a Obsessive Stalker lamia. Riko, the protagonist and daughter of a legendary delver; Lyza, the "White Whistle" known as "The Annihilator" and Riko's mother; Ozen, another formidable White Whistle who serves as an instructor; and Nanachi, a rabbit-like Hollow with a tragic past. they crazy and possessive and yandere and sadistic.