Play word 上二段活用 上二段活用 かみにだんかつよう conjugation (inflection, declension) of nidan verbs (resulting in a stem of either "i" or "u" for every conjugation)
Play word 中二病 中二病 ちゅうにびょう behaving in a way characteristic of teenagers going through puberty, esp. by being overly self-conscious