Accidental Housemates

Seojun is a shut-in, while outside Chaeyoung is being chased with a delivery bag by loan sharks. She rings the doorbell, and as the door opens she runs inside to lock herself in. She asks Seojun if she can stay for a bit, which he refuses. As they scuffle, Seojun's memories start flashing before him. For Seojun to escape his past, and Chaeyoung to escape her reality, they start living together.