So Horny I Can't Stop At Just One Load! Nailing My Private Tutor Hard! Eru Sato

Where did my father find her? He brought home a woman covered in tattoos who clearly doesn't look like a tutor! But despite her appearance, she actually teaches well—however, her son's stupidity is beyond imagination. Feeling that her income as a tutor is at risk, the teacher switches to a study plan that exploits her son's perverted mind! She makes him memorize readings by writing kanji names on body parts, or has him read words like 'hand-job' and 'blowjob' and then practice them... Will the son awaken through these forbidden lessons taught by an unconventional teacher?