Psychological horror with so much intensity it is hard to see how Oshimi can sustain it for several more volumes, though I have three here to read, so we'll see. In the last volume Seichi (which means quiet, and is the Sei from his mother, and Ichi from his father) engages in his first act of rebellion from his extremely controlling mother, telling her, "I don't need you" and he escapes to his friend Fukiishi's house to hide out in her room. . . and her bed, which not surprisingly turns events in a sexual direction, though he is not emotionally ready for this.
So, Fukiishi, as it turns out, is also controlling, so it appears he has few outlets from the smothering attention, and the jealous struggles between his friend and Mom. He listens as his mother comes looking for him at Fukiishi's house, breaking down on the porch, taking responsibility for his running away, though threatening self-violence. What can Sei do, so young and vulnerable?
The story is powerful, mostly told through drawing, many pages wordless, which is very effective. There's a two page spread close-up of Sei's face, focused on his eyes, wide-open in terror, that I will remember.