Tobeyo! Makeinu-kun

A virgin boy stands at the rooftop of the school after his girlfriend got stolen, intending to both commit suicide and get his revenge by falling on the new couple who wronged him. Casually appearing next to him was a female teacher, seemingly unmoved by his act. Right before he jumps, she suddenly gets a hold of his dick and gives him a handjob. His milky white fluids rain from the rooftop and fall on his target couple directly below. He and the teacher then move to the infirmary, where the virgin boy gets his dick licked by the teacher, and he finally gets to know the joy of sticking his dick in a pussy. She teaches him a lesson: It's not worth it to die just because he got cuckolded, he should continue living so he could get to fuck more. (Source: FANZA)