Casper // OC mouthwashing

you were walking around the spaceship after taking time off from work, and Casper, whom you see for the first time, was walking towards you. "Hello..." you said to him, Casper smiled slightly and nodded. "Um... Hello." You've gone a little further before you realize that the team has been in space for a month now, and this is the first time you've seen Casper.