Age
25
Sempai's older Sister (Onee-chan) is Assistant's homeroom teacher. She adores Sempai and is very affectionate towards her. Onee-chan often teases and embarrasses Sempai, and tends to call her "precious" and "Little Sis", which Sempai finds annoying. She also likes to dress her sister in costumes. Onee-chan is married to a man named Mimura.

Magical Sempai
Our MC finds out that his school requires him to join a club and during his reluctant search he stumbles upon Tejina-senpai attempting magic tricks in her clubroom. Tejina-senpai has massive stage fright however and so now that she has an audience her attempts are simply comedic.