| Ken Arai | |
|---|---|
| |
| Name | |
| Kanji | 荒井 健 |
| Romaji | Arai Ken |
| Biographical Information | |
| Birthday | Unknown |
| Age | 17 (season 1) 18 (season 2) |
| Relatives | Unknown |
| Grade | Second year |
| Physical and Vital Statistics | |
| Gender | Male |
| Appearance | |
| Anime | Episode 1 |
| Voice Actors | |
| Japanese | Goro Kurihara |
Ken Arai (荒井 健 Arai Ken) is one of Kakeru's friend from school. He always hangs out with Kakeru and Souta Konno.[1]