(COMPLETED) Tsukishima and his teacher (Usaki-san) fall for one another, and tend to do some rather inappropriate things in the process. This is a short story for whenever you know it's time for bed but you only want to read just one more. *Usaki-san is not an original character that is in the original Haikyuu series* *Title picture does not belong to the author and was only used for the story*