Oooh, I am afraid to begin volume 5, after that ending. Let's see, I can't say much or I may ruin the development. I love the cover, a warm and sweet grey and pink portrait of a loving mother and her adoring son, Seiichi. Oshimi shares some other portraits of him and of them both that would seem to belie the nightmare that would emerge. So what happened?! I won't exactly say. But what-happens occurs in volume one and we are in terror ever after.
What can I safely say? Let's just say Mom is a tad possessive of her middle school boy. Two volumes ago Sei got a letter from his friend and classmate Fukiishi announcing her affection for him, and Mom got Sei to tear it up with him. In this volume Fukiishi asserts herself again, and we are hopeful he will again find the voice to express his frustration, his fear, and his anger.
Interesting note: This volume is one of three I am reading within a week (not by any plan, just coincidentally) that is about, among other things, what might be called communication disorder: Komi Can't Communicate, Blood on the Tracks, and then I just read Oshimi's auto-fictional manga, volume one of Shino Can't Say Her Name.