Mardelas is a rock/metal band formed in 2014. Current Members: Hebiishi Marina (蛇石マリナ) - Vocals Oikawa Kikyo (及川樹京) - Guitar Motoishi Hisayuki (本石久幸) - Bass Former Members: Hibiki - Bass Yumita "HOT" Hideaki (弓田"HOT"秀明) - Drums Mardelas began simply as an independent solo effort by Marina Hebiishi. Upon leaving the popular all female band Destrose in 2014, Hebiishi released her first solo single “Daybreak/Phantasia,” which shot through Oricon top 10.