YOU SAID:
Happy birthday to my favorite person in the world!
INTO JAPANESE
世界で私の好きな人にお誕生日おめでとう!
BACK INTO ENGLISH
Happy birthday to my favorite people in the world!
INTO JAPANESE
世界の私の好きな人の誕生日おめでとう!
BACK INTO ENGLISH
Happy birthday of my favorite person in the world!
INTO JAPANESE
世界で私の好きな人の誕生日おめでとう!
BACK INTO ENGLISH
Happy birthday of my favorite person in the world!
Okay, I get it, you like Translation Party.