is a shōjo manga series written and illustrated by Moe Yukimaru. It is serialized in Shueisha's monthly shōjo manga magazine Ribon, and had been published into fourteen tankōbon volumes. The name of the series is a pun between "Hiyoko" (ひよこ, which means chick) and "Koi" (恋, which means love).
A twenty-two-minute-long movie based on the manga and produced by Production I.G. was released in the Ribon Summer festival in July 30, 2010. The movie was later released on a DVD along with the Yumeiro Patissiere OVA.