Nombre original: 미스터 하트
Fecha de estreno: 18 de septiembre de 2020
Serie
Tiempo promedio: 15 minutos
Géneros: Comedia, Drama
Sinopsis: Jin-won cares about one thing only: running. When he finds himself in a slump, his coach suggests Sang-ha as a pacemaker. Though Sang-ha's efforts are initially ignored, they find themselves growing closer and closer over time.