Hakoiri Drops

is a japanese 4-koma manga series written by Tsurusaki Yuu. It began serialisation in the April 2011 issue of Manga Time Kirara.

The series was released under 6 volumes from April 2012 to June 2017.

Synopsis
Kasugai Yoichi just entered high school and started living on his own. But his new next-door neighbor, Nishimori Shizuku, is the ultimate sheltered girl. The smallest ordinary thing is new to Shizuku, who grew up never leaving her house. Naturally, there's no way he could leave such a cute girl alone!

(Source: MU)