About “Hiyokoi”
Hiyokoi is a shōjo manga series written and illustrated by Moe Yukimaru, serialized in Shueisha's monthly shōjo manga magazine Ribon and published into fourteen tankōbon volumes. The series' name is a pun between "Hiyoko" and "Koi." (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.