Synopsis: Uchuu no Shiso-sama no Tsugai ni Narushikanai!

This is a story about Earth in the near future, a future where aliens have become commonplace in everyday life. And as soon as college student Shiori turned into an adult, she found out she was Sibyl’s, one of the Founders, mating pair. Doubtful about the situation, Sibyl proposed to Shiori that they try living together to test out their compatibility. Shiori accepted, not knowing what’s waiting for her... **Official Translations:** English, S.Chinese, T.Chinese, Korean, French