Tetsunoshin (ワンワンセレプー それゆけ!徹之進, Wanwan Serepū Soreyuke Testsunoshin, lit.

Tetsunoshin) is a 2006 Japanese anime television series created by Hiroto Ishikawa and directed by Kiyoshi Fukumoto.

Rumi Inuyama's father owns an IT Company in Japan and is a step further to becoming number one.

However, Tetsunoshin learned that his master's family loaned a lot of money renting their home in Hoppongi Hills, almost to the point of the whole company becoming bankrupt.

To solve this problem, Tetsunoshin teamed up with the Hills Dogs and will do anything to pay all the Inuyama Family's expenses.