Since Klaus didn't want to go home so soon, because he would have to tell his father and mother about his decision to leave the company, he wanted to organize as much as he could of his new room in Jayaa's apartment.
So he went down to the first floor, went to a nearby convenience store, and bought a few things, like cleaning products, a new lamp, and tape to close the boxes that were open. Klaus wished he could at least make his room into a livable place so that he wouldn't literally sleep in a storage room when he moved out on Friday.