INFINITE's Sungjong showed his kind-hearted side by helping clean char-filled sites of arson and promoting a support center for victims of arson and other crimes, reports Allkpop.

As INFINITE's youngest member, Sungjong had a reputation for being cute as a button, but he has shown that he does not mind getting himself dirty as a low-profile volunteer.

A supervisor for the Human Rights Bureau of the Ministry of Justice, which oversees the volunteer program, was very impressed by Sungjong's humble sincerity in performing his duties.

"INFINITE's Sungjong came on site early in the morning in a modest appearance unlike that of a celebrity to clean up the site with the other volunteers. Rather than a volunteer service in which he just takes a picture for a second and goes, he did not even concern himself about his body as he cleaned up the site that was harmed by an illegal act and helped out, so I want to express my gratitude even more," the supervisor reportedly said.

On top of cleaning up the sites of arson, Sungjong will also assist in the promotion of Hatsal, a support center for victims of arson, murder and robbery in Busan.

Sungjong's volunteer service is made even more impressive in light of what is likely a busy schedule for the idol. Last month, Woollim Entertainment had announced that INFINITE will be returning with new music in May with a comeback teaser "7 in 1" released on March 1 which suggested a cool and tough concept.