YOU SAID:

I have to be in a good mood for some reason

INTO JAPANESE

私は何らかの理由で良い気分にいなければなりません

BACK INTO ENGLISH

I must be in a good mood for some reason

INTO JAPANESE

私は何らかの理由で良い気分になるはずです

BACK INTO ENGLISH

I should feel good for some reason

INTO JAPANESE

私は何らかの理由で良い気持ちになるはずです

BACK INTO ENGLISH

I should be very good as for some reason

INTO JAPANESE

私はいくつかの理由については非常に良いことがあります。

BACK INTO ENGLISH

I have to be very good for some reason.

INTO JAPANESE

僕は目的があって ここにいる

BACK INTO ENGLISH

I had to be here for some reason.

INTO JAPANESE

僕は目的があって ここにいる

BACK INTO ENGLISH

I had to be here for some reason.