セラフィナ グラシャーニ

A tomboyish girl who barged into the office and forced her way into becoming his assistant.
She’s a third-year student at the Academy.
—However, being with Hayate is more important to her!
Because she keeps skipping lectures, her graduation is now in jeopardy.

“A huge case, just like the ones in mystery novels, where I can make full use of Senpai’s talent and my skills!”