Noona who likes her dongsaeng or rather loves is impossible but not Ji Hyo who likes Kwang Soo. Ji Hyo has been harboring feelings since they first met because Kwang Soo was the one who made him feel comfortable, took care of him and was always by his side. But Ji Hyo doesn't know how Kwang Soo feels about him, Kwang Soo always tells others, if Ji Hyo is just his family. Because of that Ji Hyo never revealed her feelings to Kwang Soo.

Their global popularity and chemistry as KwangMong couple/siblings caught the attention of a famous movie director who decided to cast Ji Hyo and Kwang Soo for his upcoming project. Will these two be able to work together beyond Running Man or will it change everything between them?

This story is about Jihyo trying to get over her first love with Kwangsoo's help, and eventually falling in love with Kwangsoo who has secretly liked Jihyo for a long time already. It is based on my pure imagination with some reference to their background

Kwang soo always seemed cheerful and seems to get along with the other members pretty well but what about after hours? A what if story. Pairing kwang soo with song ji hyo because that's my favorite ship.