My younger brother has started searching for someone—the woman he lost his virginity to at a masquerade ball. ...Um, sorry, that was me. Naturally, I have no intention of revealing myself. *This is a story about step-siblings. It includes 7 main chapters + many extras. *The title is awful, but it's supposed to be a fairly normal romance novel...hopefully. *Published by Futabasha's M Novels. *A manga adaptation will be released on July 31, 2019. *I don't reply to comments, but I do read them. Thank you.