Instant Family summary: Sejun lost his mother in an accident and lives to support his father who is not in good health both physically and mentally. He suffers from a rejection of Alpha's pheromone for unknown reasons, but due to the grace of his eldest father who took care of him after his accident, he is unable to refuse the unreasonable request of his eldest father's son, Jungwon, and spends a tiring day there is. As usual, Sejun meets Taeheon while being taken away by Jungwon. However, after meeting Taeheon, a hit cycle that hasn't come for several years suddenly comes..."Instinct is telling me, hold this man."+