Kazama Mana
This anime centers around Kazama Mana, the primary person of Yakin Byoto 2. She is an understudy who works for a sanatorium as an understudy nurturer . Mana admires Songbird, and she needs to be a holy messenger in white like her. Yet, Mizukawa Wataru, the patient whose days are numbered, tells her that there's no holy messenger and starts to make her a sex game.