にのまい
... all over again (repeating the same failure)
Noun
これではこの前まえの二にの舞まいだぞ。
You'll make the same mistake if things continue in this way.
入学にゅうがくして1か月いっかげつ・・・まだ一人ひとりも友達ともだちがいないってのはやばすぎる。このままじゃ中学ちゅうがくの二にの舞まいだ!!
One month since entering high school ... not a single friend yet. That's really terrible, at this rate it will be middle-school all over again!!