A member of the Newspaper Club at Kenichi's school and has a broad range of expertise, including stealth, lock picking, tinkering, programming, and blackmailing. He retreats from most physical danger; but is also a skilled tactician. If forced to battle, Niijima relies on hit-and-run and psychological tactics to un-nerve his opponents. In the beginning of the series, Niijima is constantly bullying Kenichi and setting him against other bullies; but as Kenichi becomes stronger, Niijima constantly relies on Kenichi to protect himself, and persuades the Shinpaku Alliance that Kenichi is their leader and defender.
