ウィズアニバーサリィー
From "VNDB":[https://vndb.org/v483]:
This is a story of a traditional magic school. Duo is forced to enter this school. He takes his school life with smart students, rich students, strange students, sisters, seniors and teachers. Bustling life, magic, wonder, a few secrets and studying magic. Also, the festival for witches "Wiz Anniversary" takes place. What will happen next in this slapstick life with heroines?
wiz anniversary