Yes he has such a big, warm (and fuzzy) heart! He said in an interview that he tries to inspire fans to do kind things since most of his fans are in a younger .
Because of him I want to sponsor a child like he did in World Vision.
He drinks MineWater and wears a UNICEF cap and shirt. It's just a minor feature, but it shows how he cares about those organizations. This is why Yongguk is a role model to everyone out there. If he gets a wife, that woman will be hell as lucky (think of Himchan for all those BangHim shippers)