YOU SAID:
I will soon be 16 years old and then i will be happy
INTO JAPANESE
私はすぐに16歳になり、その後幸せになります
BACK INTO ENGLISH
I will be 16 years old and then be happy
INTO JAPANESE
私は16歳になります
BACK INTO ENGLISH
I will be 16
INTO JAPANESE
16歳になります
BACK INTO ENGLISH
I will be 16
You should move to Japan!