that "that's what you get for not taking boxing seriously" line cracks me up, anyway that's it for Kill me Baby
this scene (and "Unused character") is anime only but there's a bit more boxing in the manga too, in chapter 106 where they just fool around punching each other
then we have one more boxing situations in chapter 45, Kumiko students have to win a boxing match in order to keep the school opened, but their students kinda sucks at it, so she's step on the ring instead
One last picture of Hibari being smug plus one page that didn't make it in the manga
More scenes happen later in chapter 46 as a rival boxing gym challenge Kousaku boxing gym
Stop! Hibari-Kun is a romcom about a guy called Kousaku who ends up living in a family whose father is a mobster, the family is composed of 3 beatiful girls, and one even more beatiful crossdressing dude called Hibari who relentlessly teases Kousaku with his feminine attitude
The chapter ends with Mitsuki challenged by more unnamed characters including an unnamed boxing girl
and that's it for Aharen-San the manga is going to end in 4 more chapters so i don't expect any more boxing scenes but maybe some will happens in the anime if there's a season 2?