Satou Ayumu

Nishizono Yui's best friend. As a result, she often runs into Yukari and the rest of the art club members. Became rather depressed after Yui disappeared, and as a result, doesn't talk to others much.

Ayumu's a female student aspiring to be a detective assistant and is Yukari's junior. Her fervent sense of justice and androgynous charm have earned her popularity among her peers.

While she is determined to pursue her dream, the path to becoming a detective assistant is not straightforward, especially as it requires Reiji's consent, which she has yet to secure. Currently, she's thoughtfully contemplating her next steps to pursue her ambition.