Moon Hee Jun, who was a member of H.O.T. which is potentially the original “boyband” of Korea, has expressed his thankful heart for Jaejoong several times on air. The two instances on radio were recently shared on a Korean online bulletin. We share them here:
On the Armed Forces Radio Program, December 21, 2006
Heejun: Jaejoong, I just really miss him so much…
MC: Yes… really..
Heejun: I really just miss him… After I joined the armed forces, when there was a vacation for the 100th day in and such thing, he called me, every time without fail… He knows the dates…. He somehow researched to find out the dates ahead of time.
MC: Seriously kindhearted… He was tremendously kindhearted… Has a handsome face as well…
Heejun: He calls me to check on my well-being: “Have you come out for your 100th-day-in vacation… How do you feel physically?” He is seriously someone who is great.
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On Music Talk, February 12, 2007
Heejun: Now that I see it, “Hero Jaejoong” has 4 circles in “Hero” and so it is very cute. (T/N: Hero Jaejoong is written 영웅재중 in Korean. “Hero” is “영웅.” Can you spot the four circles?)
MC: Oh… was it perhaps on purpose?
Heejun: Hero Jaejoong.. Hero Jaejoong… Yes… the name is cute…
MC: I guess you went on like that…
Heejun: Ah…. I miss Jaejoong…. Once every while…
MC: Ah… Like that… you long for him….
Heejun: As for why… When I joined the armed forces…? When I joined the armed forces… of course, I have cute hoobaes (T/N: juniors in the industry), a few of them, most of them are in boy bands. And the people who do the kind of music that I do are all sunbae-nims (T/N: seniors in the industry) so I contacted them first….
MC: Ah… I see.
Heejun: When I joined the armed forces… but among the hoobaes, he was the only one among them to call me on that day, despite being busy… Since he did that, I cannot help but think of him. Really….
MC: Kyah…. That is so, isn’t it…!
Original Transcript Credit: Paradise Kiss
Transfer Credit: Kim Jaejoong Gallery, 모꼬지 님
Photo Source: @Kjj0204
Translation Credit: JYJ3
JYJ3 
aigoo… the personality of that man melts all hearts~ the JYJ boys r all so precious~
Ahhh … Our lovely Jaejoongie ^^ He’s seriously on a whole new level of being considerate and caring …
I love reading these cute little reaccounts of him and the rest of the boys ^^ Makes me fall even more in love with them every single time xD And everytime, I’m like ‘Ok, I can’t possibly love them any more.’ and then I read something else and I’m like ‘ONG, I’ve fallen in love all over again!’ xD haha
Oh, the things these boys do to me xD
‘ONG’?? LOL What is THAT?
I meant ‘OMG’ xD ke ke
I absolutely agree with you ^_^
He once spoke about JJ in Strong heart too.
mun heejun ALWAYS loved jaejoong (and is always mentioning him)~ and jaejoong ALWAYS loved heejun. jae even attended HOT concerts or performances. XDDDD
Regardless of how crazy-busy his life is, Jaejoong always seems to be able to make time for his friends. He really has a kind, big & generous heart. ♥
JJ showed him such great respect and care when MHJ was going through the toughest times.
What a good heart he has!!
Great voices love great voices….
I hadn’t known Kpop yet during HOT time, now I got an idea why Jimmie was/is a big HOT fan!
He wasn’t just a member, he was the leader! Heejun ❤ He's amazing.
Jaejoong has a way of shocking people’s hearts with how considerate he is. They can’t forget it.
For me that moment was when he continued to support Jeju Island after being so mistreated. That shocked me so much because I was ready to do some damage to them, but he continued to love and support them.
I wonder if if Moon Hee Jun continued to be friends with Jaejoong after JYJ split off, or if he was one of Jaejoong’s friends who deserted him.
He’s still friends with Jaejoong. He recently talked about Jaejoong this year on Strong Heart.
Hee Jun is a 100% genuine person.When he likes you, he likes you. Kinda the same way Jaejoong is.^_^
that’s our JAE…
kakakak…i can catch my litte @MINMIN now….how are you sweetie? completely ok? happy to see you..miss you baby!!!
@MINMIN @anva
*hugs you both*
kakakak..hug my @sapphire too!!!
Its good to see you again. ^___^ I’ve missed you both.
JaeJoong had been there to encourage HeeJunnie when he was on his downfall. So of course HeeJunnie always remember about Jae…Hope this sunbae hoobae relationship never end ^__^
And I wish for a collab for these 2 people. Cuz they’re both genius in music term ^_____^
Jaejoong ❤ he is so special! So kind, so caring, so perfect ❤
I think Jaejoong is Hee Jun die hard fan~
he used to make lunch box for Hee Jun during pre-debut.
You’re so precious JaeJoong ❤
My beautiful and kind Kim Jaejoong .. I LOVE YOU!