This day was established from the idea that the number "11" resembles a teacher and student standing face-to-face, while the number "25" resembles a smile. Based on this, the two would exchange triple smiles and go say "thank you" to each other!

Keine-sensei, thank you for always being there for us!

→ The Wriggle (♀) who unintentionally makes teachers fall for her

I'm... not good at studying, but when you teach, I can actually listen properly!

November 25th is Say "Thank You, Teacher!" Day!