Have a Good Neighbor

Choi Lyn and Hwang Seol Aa are studying at university when Seol Aa recruits Choi Lyn to join Good Neighbors organisation as a volunteer. Since they need one more member who is good at social networking, Choi Lyn suggests her childhood friend and badminton champion, Cho Eun Gyeom, to work on their campaign.
Will working together lead to new discoveries?
(Source: ColourMePurple at MDL)