A. One day during Hero2's childhood years, Hero2 was practicing his straight punches that Genkaku taught him the previous day near the tree in the back yard of the house. Without getting noticed by Hero2, a flying squirrel-like being was copying exactly what Hero2 was doing and practiced straight punches together near the root of the tree. At that time, Nanami happened to see the flying squirrel making these strange movements as she exited the back entrance of the house. She quickly moved to the back of the tree, and caught the flying squirrel-like being by jumping on top of it. Nanami then decided to name him "Mukumuku" because of his very soft touch and introduced him to Jowy soon afterwards. The four of them became childhood best friends. Also, the one who named the other members of the flying squirrel team was the leader and also the one who was initially named Mukumuku.