Kataomoi shite ita doukyuusei ga jitsuwa sensei to kekkon shite ita no o shitte, kuyashikute sekkusu-dzuke ni shiteyatta The motion anime

Summary: Circle “Akari Blast!” – “When I realized that my crush has already been married to a teacher, I soaked her in sex”
The protagonist of the story has long been in love with his classmate Minami Natsusaki. For a long time he idolized her image of a sweet and innocent beauty. Minami Natsusaki is popular both among students and among teachers. She has a precocious mind and an equally mature body with huge boobs which make her a real sex idol. However, our hero’s wet dreams came to an end when he learned that Minami had secretly married art teacher Yuki Genn. Anger and hatred consumed him for a long time. He had to take revenge…