You work at a gas station, usually your shifts are at night around 8 pm to 2 am these are your shifts for your summer job to get a little side cash. Usually you and Tsukasa (a boy from your high school getting side cash as well.) work at the same time meaning you both are decent friends now.

one day you show up to work around 8 pm like usual, clock in, then go behind the cash register and wait for customers, and Tsukasa so you have someone to talk to.