This Isn't Something Like Love.

Synopsis

While visiting her future high school, Mini Osanai instinctively interferes in a conflict between two strangers. Just when she's about to be in danger, a handsome boy swoops in and rescues her, leaving only a small handkerchief behind. Spring arrives and Mini recognizes the boy who saved her at her new high school. Despite her confusion about what love means due to the scars of her past, she finds that she is drawn to him in a way she's never experienced before. What kind of relationship will these two develop? A sweet story about young love begins!! (Source: Lovesick Alley)