In Volume 1, Basara walks in on Mio while she is in the bathroom. Then, just as she is about to scream, Basara covers her mouth. Once the dust has settled, Mio slaps him in the face.
When Mio wakes Basara up, she finds a video game planted on his bed. Then, Basara accidentally falls on top of her and he gets a Groin Attack in response.
Any scene with Maria doing her naughty antics with Basara, Yuki and Mio are bound to cause hilarious reactions.
At one point in Chisato's apartment, she has Basara stand behind her while she prepares dinner for him. Then tells him to wrap his arms around her waist and hold her tightly against him. Basara tries to be Above the Influence by saying it's improper, because she's his aunt and underdressednote Chisato was dressed in one of his school shirts, which was just above mid-thigh. She wasn't wearing anything underneath it. So she proves he isn't by rubbing her backside against his crotch, which causes him to get an erection. The faint smirk on her face practically reads, "as I thought".
During the Tournament Arc in BURST, they deal with the brother of one of the first competitors, claiming he was superior. Only to be cut down via a One-Hit KO. Leohart even comments how he went down in an even more humiliating manner.
