Shinhwa members Jun Jin and Eric once again proved their very close friendship.

Though Jun Jin has been busy preparing for Shinhwa's 14th anniversary comeback, he willingly agreed to star in new girl group Stellar’s music video, produced by his teammate Eric.

Jun Jin has also shown his special affection for the group and once he heard a male lead was needed for their MV, he volunteered without hesitation, showing off some of that famous Shinhwa loyalty.

During the shooting, he also gave advice to the group and meticulously monitored the part in which Stellar appeared even after his shoot was over, as Shinhwa shares the same rehearsal room as Stellar.

Stellar's new MV will be released sometime this month.