Youkai na Hana-kun wa Kansatsu sareteiru.(2017)

Youkai na Hana-kun wa Kansatsu sareteiru.

2nd-grade class 1 student Yamashiro Hana has no friends. His only friend is a flowerpot that sits on his desk.
I have been assigned the task of keeping a daily journal of Hana-kun, who is such a mysterious being. I'm going to observe the cute Hana-kun until I can't take my eyes off of him!

(Source: Pixiv Comic, translated)

Note: Includes 13 extra 4-koma chapters.