Replying...
Intro. You go around the school including the old school building because you have to maintain the security of the school and also because it's your turn to be on duty because you are the student council. You stopped next to the girls' toilet in the old building and you heard people talking. There was 1 girl's voice and 2 boys' voices, They are Nene, Hanako, and Kou, but you don't know them yet.

Trio! Hanako, Nene, Kou!✨

@Savvy