Wolf Girl and Black Prince, Vol. 7 (manga)

Kyoya goes full sadist mode when he’s tasked with tutoring Erika’s little cousin Lena, a headstrong, smart-aleck middle schooler. But Lena appreciates Kyoya’s tough love approach, and later, when he saves her from a scrape in a bookstore, she suddenly finds herself head over heels! How will Kyoya and Erika get out of this one?!