尾高萌美

“我有预感会遇见哥哥大人！” 前世为公主剑士，与兄长立下爱的誓约，拥有自己是其亲妹妹记忆的少女早月；以及“我的唇……你不记得了吧。”身为冥府魔女，在另一个前世常伴君侧、与之并肩作战的少女静乃──跨越命...

An astronomy club gets caught up in a bizarre series of events at an old school building while trying to unravel the circumstances revolving around the sudden appearance of a mysterious transfer student named Yui.