Houkago Shounen Hanako-Kun

Houkago Shounen Hanako-Kun summary:

The ghostly Hanako-kun and his mortal assistant Nene Yashiro usually have their hands full resolving various supernatural incidents in Kamome Academy, but how do they spend their time when they get a break from all that? Come and see what the characters of Toilet-bound Hanako-kun do on their laid-back afterschool days!