Through a combination of being Unknown's only grandchild and thus her heir and also generally being much loved in the family, Shota has managed to find the sweet spot of being an adult and having the duties, responsibilities, and freedoms that entails while also regularly getting out of trouble he's gotten himself into and having his shenanigans overlooked. This includes the shenanigans and trouble he has gotten Do-Yun into along the way such as helping him party crash and also the box of stolen elevator crystals he's collected over the years.
Shota makes a habit of chasing fun, but never to the point that it interferes with his duties to the family.