- Jaejoong used to sell bubblegum and chocolates outside a supermarket to pay his rent and people thought he stole it.
- Jaejoong has a tattoo on his back which is “TVfXQ SOUL”.
- Jaejoong’s real name given by his biological parents is Han Jae Jun.
- Jaejoong and Junsu wear girl’s jeans.
- Jaejoong’s Bigeast ID is no.1
- Jaejoong hates it when someone hold his waist.
- Jae Joong mentioned that he had a really horrible voice (deaf-toned)& his friends teased him when he told them he wanted to become a singer.
- Among Jae Joong’s 7 sisters from his adopted family’s side, his one real sister from his biological parents and his half brother, Jae Joong had the best outcome when it came to looks, as he is being told as the prettiest of all the girls.
- Jae Joong has 7 sisters from his adopted family. He has one real sister from both his biological parents & one half brother from his father’s side.
- Jaejoong changed his birthday to Jan 26 because it was believed that if it was recorded as Feb 4th, it would bring him bad luck.
- Jaejoong’s favourite drink is tequila.
- Jaejoong’s real birthday is February 4th.
- Jaejoong believes he will marry a fan.
- Jaejoong has a habit of sticking his tongue out after singing his part(s) in live performances.
- Jaejoong was supposed to debut with Yunho, Suju’s Heechul and Kangin in a group called “Four Seasons.”
- Jaejoong likes to cook alone.
- According to the members, Jaejoong can text really fast and very accurately.
- Jaejoong has 4 refrigerators.
- Jaejoong doesn’t like to be call pretty, he prefers cool and handsome.
- Jaejoong has 8 older sisters not 7. He’s the 9th in his adopted family.
- Jaejoong is one of the best leader singers because his voice was sought out to be relaxing and gentle.
- JJ is the all round entertainer in TVXQ. He can sing,dance,direct,compose,act. There’s nothing he can’t do.
- Jae Joong’s ideal girl is someone who looks innocent on the outside but is actually dirty on the inside.
- Jae Joong was able to make it to their concert even after just a couple of days from his accident.
- Jae Joong injured his leg during their promotions of Rising Sun. Due to that fact, when they performed Rising Sun lived they all wore masks.. dancers who wore a mask in the video and pretended to be Jae Joong.
- The doctor once mentioned that if Jae Joong had an injury like that again, he won’t be able to dance anymore.
- Jae Joong likes unique underwear.
- Jae Joong is close friends with SS501’s Heo Young Saeng, considering Young Saeng trained under SMe before moving to DSP Entertainment.
- Jae Joong met Kim Hyun Joong of SS501 through another SS501 member whom happens to be Heo Young Saeng, Jae Joong’s close friend.
- JJ is best friends with T.O.P, Heo Young Saeng & YC as they tend to call each other up in the morning and drink Soju together.
- Heo Young Saeng onced mentioned that Kim Hyun Joong stole his best friend Jae Joong from him.
