If you're looking for manga similar to Kick-Heart, you might like these titles.
Sawa Ito looks like any normal girl. She works part-time at a lunch shop, and she has a crush on Kazushi Okutake - one of their regular customers. But, her real identity is that of Shark-teeth SAWA - a heel (bad guy) wrestler who is taking the wrestling world by storm!! Sawa doesn't ever want her crush to find out her secret, though she still wants them to have a relationship. But it won't come easy. Her dad pushes her with his idealistic views of how important grit is for a heel, and on top of that a powerful rival shows up as well - Marie Tsusaka. Things just keep escalating. Will Sawa get to experience her fairytale romance...!?
Momotaro is a masked wrestler and a descendant of his legendary warrior namesake. Combining the ferocity of pro wrestling with lighthearted gags, this manga knows how to make the wrestling ring exciting. Throw in characters based on famous figures from fables such as Kintaro and Urashima, and you have yourself a recipe for white-knuckle showdown!
Rumor has it that whoever spends a night with this sumo wrestler becomes beautiful...and so, another lone woman appears at his door!
A boy in love with his classmate has been pushed by their own free parental pressure for the world of sumo.