Rescue My Shrunken Lover

Katsuki Bakugou, a Japanese student and only child with supportive parents, is an arrogant, boorish, and freaky individual who loves spicy food and dislikes sweets. He trains excessively, has won multiple martial arts tournaments, and was almost killed by a rogue hero, which made him more cautious. He accidentally eats his lover who has a shrinking ability.