Yarouze!

やろうぜ!

The story focuses on Kusanagi Sou -- a motorcyle racing enthusiast. Although enthusiast may be too soft a word. The boy is obsessed. One day Fuwa stumbles across him sleeping outside the school with bike magazines piled around. He strikes up a friendship in order to stay close to Kusanagi, and pretends that he knows all about bikes. (Source: MangaUpdates)