From Manga UP:
As the cherry blossoms fall, a new school year kicks off at Hyakki Academy a school attracting youkai from all over Japan! Unfortunately, the first years are far from model students, especially the troublemaking idiot duo, Mamekichi Maizuka (a mame-danuki) and Tamao Akisame (a nekomata). It’s time for the lovable but rambunctious animal youkai to steal the spotlight in this spinoff comedy, set a year before the events of "A Terrified Teacher at Ghoul School!"

Original Webcomic