First Love Monster

Nikaido Kaho comes from a wealthy family, and throughout her life, everyone has been kind to her. She nearly gets hit by a truck while moving into her new high school dormitory, but a boy saves her. Kaho falls in love with him right away, but when she asks his name, he tells her she's weird. Kaho is astonished because it's the first time someone has ever treated her badly. She fearlessly declares her love after discovering that the kid who saved her stays in the same hostel. The boy introduces himself as Kanade and accepts her invitation to go out. Kaho regrettably learns the next day that her first boyfriend is a fifth-grader.