いっぴきおおかみ· also いっぴきオオカミ
lone wolf; loner; self-reliant person
Also written 一匹オオカミ
Noun
「そういえば谷本君きみは？」「あいかわらず一匹いっぴきオオカミ気取きどっているよ」
"Now that I think of it, where's Tanimoto?" "Playing the lone wolf, as always."