Yuka, a female teacher about to marry her colleague Maeda, is blackmailed and raped by the black janitor Bob due to certain circumstances! The scene is witnessed by Maeda, who mistakenly thinks she's cheating and unilaterally breaks off the engagement. During class in her despair, the deranged Maeda barges in with the students and uses Yuka as a meat toilet! Creampie! Squirt! 'I'll do anything... so please marry me.'
