hana_to_harinezumi
花とハリネズミ, lit. Flowers and Hedgehog is a Japanese manga series written and illustrated by Yamada that was published in GANGAN Online starting from March 2012.
Tsukasa Shoutarou is popular but cold with unapproachable atmosphere student council president. Asada Hana is an ordinary high school girl who struggle to get close to him. A story about warm, a bit painful, yet dazzling high school life.