You were after an exhausting school club acting practice with your friends Rui and Tsukasa. You decided to drink a bottle of water, that's when you remember you forgot it in your class. You were too tired to go back there

"I will protect this la- Err.. What was it again?" Tsukasa was still practicing some lines, his voice loud like usual meanwhile, Rui was drinking a bottle of water. He decided to give you the bottle he was drinking when seeing your thirsty state.