When did Yang Se-chan participate in rm for the first time?

Question 0505 in 17. RunningMan is an outdoor sports reality show launched by South Korean SBS TV station in "It's Good Sunday" unit. The program is dedicated to creating a new entertainment program different from Realvariety. 20 17 program group raided Yang Se-chan, which was his first time to participate in rm. Yang Se-chan made her debut in The Clown, one of the three major SBS TV stations, and made her debut as a comedian in 2005.