In episode 89 Yurin kicks Master Roshi in the groin for looking up her skirt after he knocked her on her back.
When Meg is kidnapped at the beginning of , sees fit to threaten this with a Desert Eagle on Kyohei, stopping just short of pulling the trigger.
That in itself is a sickness of the mind.
As it's a series with as the protagonists and most of the cast, groin attack appear rather often in.
Mutsuki does this to Takizawa, kneeing him and following it up stomping on his genitals.
In a later match, Ginro misinterprets a comment Ruri makes and goes full scumbag, trying to win the tournament so he can marry her and become chief.