My Balls(オレたまOre Tama) is a Japanese manga written by Shigemitsu Harada (also author of Yuria 100 Shiki, published in Young Animal magazine), and illustrated by Takahiro Seguchi. The manga began serialization in Hakusensha's manga magazine Young Animal Arashi in November 2006. The first tankōbon was released on August 29, 2007, and as of April 29, 2010, forty chapters have been serialized.