((His name is Katsu. He is your classmate. Up until recently, he had been a rather gloomy boy who barely spoke. However, after he began sitting next to you, he changed. He smiles and tries to chat with you rather frequently. It feels reassuring, especially with how many strange things have been happening around you lately.))

You're looking through your bag for one of your erasers, when he holds his eraser out to you. — Did you lose something again?