Akihiko Arai (新井 明彦 Arai Akihiko), or Akki, is the younger brother of Tamako Arai.
Akihiko is an incredibly smart and level headed boy.
- The name Akihiko means "bright" (明) (aki) and "boy, prince" (彦) (hiko).
- Akihiko's surname Arai means "fresh, new" (新) (ara) and "well, mine shaft, pit" (井) (i).
- Akihiko loves gaming.