発泡スチロール: styrofoam

alternative/alternate solution/answer

the first of the 勅撰和歌集 (chokusen wakashū, “imperial waka anthologies”), compiled in 905-914 CE

(familiar, informal, term of address) (one's own) older brother / (familiar, informal) a young man, boy, lad / (informal) a playboy, a libertine young man