[All] Cha Eunwoo's younger brother is also an issue.

Did anyone watch You Quiz on the Block last June with Oh Chang-gyu?

There was a few seconds of footage of Oh Chang-gyu walking down the street with his coworkers.

One of the colleagues walking together in that scene is said to be Eunwoo's younger sibling.

Even though he only appeared for a few seconds, Eunwoo's younger brother showed visuals that were just as good as his older brother's, enough for viewers to recognize him.

Astro members say that the younger brother has a smaller face than his older brother, Cha Eunwoo.

How proud must the parents be to have two handsome sons.