たにんまかせ· also ひとまかせ
leaving (it) to others
Also written 他人まかせ
Noun
他人任たにんまかせはダメ。ライフセーバーではないが、俺おれ自身じしんが介抱かいほうしてあげないと。
I can't leave this to others. I'm no lifesaver but if I don't help her myself....