close friend, bosom buddy / crony, chum

敏正: a male given name

島根: Shimane

島田: A surname. / 嶋田: A surname.

(chiefly women's speech) first person singular pronoun: I, me

背中: one's back

中: inside / 中: middle / 中: among (a group or mass) / 中: during (time) / 仲: relationship, terms

仲: a surname

Ka-ending dialect form of ない (nai)

仲間: a companion, a peer