‘A cross-dressing duke in a BL novel who pretends to be an obsessive maniac.’ That was a perfect sentence to describe her. Levin de Bervein was the lord of a prestigious duchy and a renowned swordmaster with outstanding looks. While seemingly perfect, he harbored a secret: he was actually a woman! After falling into water unexpectedly, she met the eccentric princess. “Sister, please become a fake obsessive maniac!” Since they were inside this tragic BL novel, the princess wanted her to seduce the bottom male lead instead of the