Richman (리치맨)

Release Date: 9 May - 28 June 2018

OST Pt.1

CHEEZE (치즈) - Hard for me

OST Pt.2

Nam Taehyun (남태현) of South Club - Real Love

OST Pt.3

Kei of Lovelyz (러블리즈) - Let's Pray

OST Pt.4

Bella (벨라), Hyeseong (혜성) of ELRIS (엘리스) - Single Heart (일편단심)

OST Pt.5

Doyoung (도영) of NCT - Hard for me - Romanized

OST Pt.6

Monogram (모노그램) - Do U

OST Pt.7

Song Haye (송하예) - My spring (나의 봄)

OST Pt.8

Lee Byung Chul (이병철) - Me Too (나도 너처럼)