Following late Moonbin's funeral, AROHAs and the closest people he left behind gathered together in his memorial space. SEVENTEEN Seungkwan, Billlie Sua and ASTRO members even left letters to their dearest angel, mentioning their respective "promises."

Moonbin's Only Sister Billlie Sua Dedicates Heartwarming Letters To Late Older Brother

On April 24, Fantagio Entertainment, the agency of ASTRO and the late Moonbin organized a memorial space for the latter in front of the office building.

On this day, the memorial space was filled with the family, colleagues and fans of the star, wherein flowers, letters and small gifts were left to honor the beloved star.

ALSO READ: '98 Liners' VIVIZ SinB, Seungkwan, Chanwoo Mourn Loss of Best Friend ASTRO Moonbin

According to reports from Korean media outlets including Herald POP, some of those who showed up were ASTRO MJ &Jinjin, SEVENTEEN Seungkwan, Weki Meki Yoojung, and the late Moonbin's one and only younger sister, Moon Sua.

Among the letters, Sua particularly touched the hearts of everyone for showing braveness amid mourning. In one of her messages, Sua greeted her brother and said:

"Oppa, it's me, your one & only precious little sister, Sua. I came, too! I have cried a lot so I'm going to stop now! From now on, I'm going to smile a lot. I'm going to be happy while doing the things that I want to do. I hope you will find peace and happiness there

You have to watch over me and check if your little sister is doing well here. I am going to live well and work as hard as you do. Don't try to stop me. Even when things get hard, I will come to Oppa often to whine you just have to accept it.

You've worked hard this whole time. I love you so much and I'm Oppa's younger sister forever.

Moon Sibling's forever."

Sua wrote another letter and continued to express her unrelenting love for her brother emphasizing, "I'll come back again."

Moonbin's Best Friend Seungkwan, 'Brothers' ASTRO MJ & Jin Dedicate Messages To Late Star

Aside from Sua, the closest friends of Moonbin also penned him letters, revealing their "promises" to the late idol.

Starting from Seungkwan, he attested to making the whole universe feel like Moonbin and ask him to wait for a little bit more.

His "brothers" ASTRO JinJin and MJ also left him messages unveiling their feelings. Leader JinJin particularly promised:

"I will take care of your mom, dad, and Sua so don't worry. I love you so much, my little brother."

Meanwhile, MJ, who immediately asked for an emergency vacation after what happened amid military service expressed his apology to the late Moonbin, saying:

"If only I had been closer. I'm sorry I couldn't protect you."

As of this day, more letters and tributes to the late idol pour out from fans and colleagues.

Meanwhile, Moon Bin, mononymously known as Moonbin debuted as an idol in 2016 with the group ASTRO and has expanded his singing career to the actor's path. On April 19, he, unfortunately, passed away at the age of 25 due to reportedly extreme choice.

READ MORE: SHINee Key, Taemin Leave Messages To Late ASTRO Moonbin & People He Left Behind

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Written by Eunice Dawson.