Mr. Heart is a youth romance drama about the friendship and love between a marathoner and a pacemaker. THE MAN BLKŌĆÖs Cheon Seung Ho plays Jin Won, a record-breaking marathon runner in high school, while PRODUCE X 101ŌĆśs Lee Se Jin takes on the role of Sang Ha, Jin WonŌĆÖs pacemaker. Rumor has it that Lee Se Jin, who has built his acting career with more than 16 projects (music videos, short films, dramas) since 2011, and Cheon Seung Ho, who has been working as an idol, a model, and an actor, have kept in step with each other to create heart-fluttering romance. Mr. Heart is the second work of W-STORY, a production company that showcased popular BL drama, Where Your Eyes Linger. As Where Your Eyes Linger ranked at the top of the drama rankings in numerous countries, including Japan and China, expectations for Mr. Heart are already through the roof. Besides Lee Se Jin and Cheon Seung Ho, DreamnoteŌĆÖs Lara will star as Hyo Ri. Source (1)