Ono D

Kotaro Onodera (小野寺 孝太郎 Onodera Kōtarō), aka Ono D, is a student in Jindai High who once dated Kaname Chidori, but they remain good friends and he has been with the gang in many episodes.

Etymology

 * The name Kotaro means "filial piety, obedience" (孝) (ko), "thick, big" (太) (ta) and "son" (郎) (ro).
 * Kotaro's surname Onodera means "small" (小) (o), "field, wilderness" (野) (no) and "temple" (寺) (tera/dera).