S1·E84 Episode 84

Jung Eum gets a call and hears that she can't graduate as she is short of credits. She decides to do volunteer work at the hospital where Ji Hoon works as a way of earning the credits she needs. However, she encounters a strange old man on her first day at the hospital. Meanwhile, Bo Seog spots the scooter Jun Hyuk bought and wants to ride it to relieve his stress.