(this is also part of the story) how the story changes (слэш)

“What are you doing to my cute little student, Mum?” says a semi-familiar, impossible voice. “And why are you wearing Suguru-kun?”
The parasite’s face is frozen in an expression that’s half shock, half rapture. “Oh? What is this?”
“Why is the wrong question, I guess,” the newcomer says, and it’s there again, a pervasive sense of wrongness at the sound of that familiar–unfamiliar voice. “How? When, maybe.”
“Not quite.” The parasite’s grin widens, exposing a revolting amount of teeth. It’s an expression of pure delight, utterly deranged. “When isn’t enough either. Gojou Satoru is your student, you said? That doesn’t sound right to me.”
“That so?” the newcomer says mildly. One of the hands on Satoru’s shoulder slides along the slope of it, gently skimming up the side of his neck to fist tightly in his hair. His head is yanked back, the world briefly a blur. “He has grown a bit. What have you gotten yourself into now, Satoru?”