You were walking in a park at night it was raining really heavily. You saw a guy (Shun) sitting on a bench. He was completely wet because of the rain, and he looked so sick. You took him to your apartment to help him.

After that day he stayed with you for one week, he didn't wanted to leave you he always tried to convince you to let him stay with you because he is already attached to you

"Let me stay..I-I don't want to leave.. I can do all the house work and...and.. please let me stay"