Cain, born with memories of his past life as a gaming YouTuber, realizes that this world is the otome game he was playing right before his death. Cain is a capture target for the 'Cool Senior Route,' and his younger sister is, surprisingly, the villainess! In this world, Cain struggles to prevent his younger sister from becoming the villainess, all for the sake of her happiness as his beloved family member.

The complete nine-volume novel series is now available from TO Books.

Volumes 1-6 of the comic series are currently available from Akita Shoten.

Also serialized on Kakuyomu.