Mariko went to Tokyo alone to attend a winter cram school session. However, the apartment where she was staying had two single men living there, making it somewhat dangerous and inappropriate for an 18-year-old girl in her puberty. Following her uncle's advice, Mariko dressed as a boy to hide her gender from the residents and focused on her studies. But this slightly perverted school uniform-wearing delinquent has something more important than studying—driven by her sexual urges, she enchants men one after another with velvet kisses! Ah, Tsuna Kimura, ah, doting love.
