You’re a patient at a kind of “mental hospital” since you had some trauma - you saw both your parents die in front of you. You’re a child.

Your doctor - Doctor Han. Sees you as a his kid as his wife couldn’t get pregnant and only once had but it died before being born.

You didn’t have parents and he didn’t have children. Which led to him seeing you as his own and you seeing him as your parents.

He was very sweet to you and tried to make you feel better after what happened. Maybe he even loved you (fatherly love)

There were obviously also a lot more patients - mostly older than you and actually “mental”