have to go, must go
一人で行かなくっちゃだめだよ。
You have to go by yourself.
雪だけど、行かなくっちゃ。
It’s snowing, but I have to go.
僕たち、もう行かなくっちゃ。
We have to go now.
銀行に行かなくっちゃ。
I have to go to the bank.
もう、行かなくっちゃ。
I have to get going now.