C87 Sleeping naked and healthy you don't know

At this moment, my head really stopped. The heck, what is going on? Despite my indignation, I quickly put on my clothes. Just as I put on my clothes, the door of the room opens again. This time, it is my sister who walks in!

"Xiao Yu, what happened just now?" As soon as my sister entered my room, she asked me angrily.

"Sister, I didn't do anything!" I felt wronged