Mayo Chiki anime
Kinjirou Sakamachi was raised by his sister and mother, both of whom love professional wrestling. This helped him develop a strong body that can withstand hard punches and kicks as well as deadly vehicle bumps. He also developed gynophobia (an abnormal fear of women). His nose bleeds when he is touched by a girl. He sweats profusely and, in rare instances, faints.
A fateful meeting in the toilet changes his life. He discovers that Subaru Konoe, the butler of Kanade Suzutsuki, is actually a female while trying to escape from a girl. Surprisingly, Subaru brutally attacked Kinjirou, causing him severe injury and knocking him unconscious. Kanade appears to him when he arrives. She promises to cure him of his fear in exchange for his silence.