1, nerve-racking.

こまるなあ/こまったなあ。

2. There is something wrong with the brain.

ちょっとキレてる/おかしいよ/おかしいんじゃない。

3. Just say it earlier.

Good morning. Sorry, sorry, sorry.

4. Too boring/boring.

たいくつだなあ/つまんないなあ。

5, cheapskate.

けちくさい。

6. Are you kidding?

なにてんだよなにてんの.

7. It's really hard to get.

へえ - めずらしい。

8. Just say it earlier.

Good morning. Sorry, sorry, sorry.

9. I owed you in my last life.

Past life (ぜんせのり).