YOU SAID:

I am a good guy I swear

INTO JAPANESE

私は誓う良い男だ

BACK INTO ENGLISH

I am a good man to swear

INTO JAPANESE

私は誓う良い人です

BACK INTO ENGLISH

I am a good person to swear

INTO JAPANESE

私は誓う良い人です

BACK INTO ENGLISH

I am a good person to swear