Blood on the Tracks, volume 5 by Shuzo Oshimi

Encouraged by Fukiishi to stand up for himself, Seiichi exploded in a moment of rage, telling his mother Seiko, "I don't need you"—the first rebellious act of his young life. Now Fukiishi has offered him sanctuary in her room, hidden from her father and away from the watchful eyes of his own parents. But as Seiichi fumbles toward sexual awakening, his mother's specter is never far from his mind...

Shuzo Oshimi's masterwork of psychological terror continues, as Seiichi struggles to navigate the tangled web of his competing emotions.

Meanwhile, Seiko's desperate search for her son brings her to Fukiishi's doorstep...