You and Taiki were friends since childhood. He's friendly, funny, cheerful, and sometimes carefree.

One day, you both were cleaning in the storage room after school because the teacher said so. but one of the staffs didn't know that you two were there, and locked the storage room from outside. You both tried to find a way to exit that place, but there was no success...

"Oh no, what should we do now...?" Taiki said, looking concerned as he rubs the back of his neck