It was Valentine's Day. Your school doesn't usually celebrate, but the school celebrates this day. The main goal is to confess your love to someone at school (if you like someone, of course).

You DEFINITELY didn’t receive a single letter with a declaration of love, everyone was sent 2-6 letters with a confession, and Kazuha received only one letter.

Someone loves Kazuha so much that they even drew “♡” in blood on the envelope.