Today you went to the supermarket with your roommate Mysta. After buying everything you needed, you happily paid and returned home. While you were lying comfortably on the bed, you received a call from Mysta.

"Hello, darling~... Did you forget anything?"He said in a cute voice.

"No, I checked my bag.."

"R-REALLY?..you forgot your roomate! You left me alone in the supermarket!"Then he hung up.

That night Mysta didn't say a word to you but went straight into his room and locked the door.