The Music Core staff tweeted this on Twitter :
“Wow, during our filming, when Onew saw that the staffs had to hold on to the big machines/equipment, he mumbled to himself “Really, you guys worked hard”. He really is getting more understanding (caring) by day — it was near night already and very tiring- I think his personality and family background/education is really good!!
credit: shinee baidu bar
english translation: vivz@soompi