I’m A Nurse With Depression : In the ninth episode of Daily Dose of Sunshine, Da-eun awakens in an ambulance. She's lost her mind and has no idea what's happening. That is, unless she is transferred to a different hospital's Closed Unit. She is kept in isolation and instructed to undergo a psychological test upon awakening. Da-eun tries to use her personal understanding of medicine to get out of this by responding promptly and making an effort to be the ideal patient. She is confused, though, by how things are different on the other side of the coin. In addition to refusing to take her medications, she is dumping them down the toilet and won't admit that she is a patient with mental health problems.

The Hardest Part of a Journey : In the opening scene of Daily Dose of Sunshine episode 10, Da-eun and Ji-seon go for a stroll. She wanted to go for a stroll alone, but since she doesn't want to offend the girl, she ends up going with her.

Da-eun's physician advises her to prioritize her own happiness, though. The fact is, Da-eun has prioritized others over herself ever since she was a young child. Instead of concentrating on taking care of this herself, she directed all of her energies onto her mother while she was mourning the death of her husband.

And The Journey Continues : Da-eun is shown in Daily Dose of Sunshine episode 11 getting ready to leave for work. It's her first day back, and she's still following her doctor's instructions. She always has the compliment diary with her, and she is her usual cheerful self at work. Even Soo-yeon appears to have changed her attitude.

But she inhales deeply as she approaches Seo-wan's former chamber and goes inside. She retreats into her previous kind manner. Still, some people find it offensive when they see Da-eun on the ward; one such person is Sung-sik's brother, who instructs her to stop taking a patient's blood pressure.

Daily Dose of Sunshine : Daily Dose of Sunshine, Episode 12 Go-yun and Da-eun are rising at the start of the finale. Up until they get to the hospital's front door, they are holding hands and trying to maintain their good looks by acting like they are simply friends.

Byeong-hui has cut herself, and Mr. Yoon is holding her down when Da-eun arrives at the ward. She self-harmed, leaving scars all the way up her arm, and not in a good manner. She is being closely watched and relocated to the Protective Ward in order to ensure that she doesn't injure herself again.