Akdong Musician's Lee Chan Hyuk's past Facebook post has been brought back to fans' attention with the duo's recent debut and made them wish they had an older brother like him to protect them like his younger sister Lee Soo Hyun!

SEE ALSO: International critics divided on the highly anticipated 'Squid Game 2'

Lee Chan Hyuk wrote on his Facebook on September 28, 2012, "I ask that the men who are much older than my dongseng be a bit more careful when chatting with my dongseng. Although I've been noticing that she gets along better with unnis and oppas who are one or two years older than her same-age friends since a while back, it worries me as her oppa that the age gap with whom she gets along with is widening these days. Although I am thankful that you are nice to my dongseng, my dongseng is still young so her following along to all of the oppas' jokes... It doesn't look right. There are some who even call her, 'honey', and because I don't look at much of the chatting content, I might be misunderstanding but I don't think that is appropriate. She laughs and brushes it off, saying it's a joke and it's fun, but an oppa (who is way older) who we've never seen in person calling her honey.. This person I heard of is just one example but the age range with whom my dongseng has been recently chatting with is a lot wider than mine. If you want to be close with my dongseng and look over her fondly, I would be thankful if you would play with her in an appropriate and innocent way.^__^"

It's clear that Akdong Musician has 200% love for each other as siblings, and you can catch more of them through their MV making clip just released below!