Becoming the Librarian's Pet

Synopsis

Legendary delinquent Ryu disappeared two years ago, but that doesn't deter Hizuru Omoda, who aspires to become his right-hand man. With "Accept all fights!!" as his motto, Hizuru terrorizes his fellow students at the library every day. But, the only person he can't beat is the student librarian, Ryusei Hatogaya, who has no mercy for those who disturb the peace on his turf. He's always keeping Hizuru busy with library assistant tasks. One day, Hizuru overhears the other library assistants demanding that Ryusei kick him out, but surprisingly, Ryusei seems to acknowledge Hizuru's worth. Ever since then, Hizuru's been opening up to Ryusei, but that doesn't stop him from picking a fight with him! Source: Renta