Yue and his new friends are investigating the mystery of a missing kindergarten principal, who has been 'spirited away', or rather, eaten by an ayakashi.
This volume continues from volume 1, with Yue trying to be friends with two humans, even as he knows that one of them will have to be his 'meal' at some point. He doesn't seem to completely understand this, but it is eventually clear that he understands well enough, but is still willing to befriend the two teens.
Later in the volume we see a mysterious man claiming that Yue has his body, and learn that Yue is more than he at first seems.
An interesting, if slightly confusing volume in the series. I look forward to volume 3.