Guilty Hole: Room of Guilty Pleasure

"Please pick your favorite student..." This overworked and underpaid teacher, Mr. Sasaki, has his whole life turned upside down when he stumbles upon the "Guilty Hole." He thinks it's a dream when he sees the student's shoe lockers have been transformed into selection panels... seeing one that catches his eye, he joking picks her... When she appears in his classroom in the middle of the night, throwing insults at him, but her eyes seem to linger on him, tinged with embarassment. "I'll finish this quickly so... Don't hold back, ok...?" Thus begins a forbidden relationship... Welcome to the Guilty Hole, where anything is allowed-- (Source: Official website, translated)