I'm a Library NPC in Practical Education

[Real Education + Class C Start + Shiina Hiyori] After transmigrating, she didn't get a body of her own. Residing in the body of a girl named "Shiina Hiyori," Xia He, as an observer, became familiar with this strange world. Until… the day she entered the Advanced Training Program, Shiina Hiyori looked at the delinquent group spawning like monsters in the classroom, her light purple eyes gradually losing their luster: "Goodbye, my peaceful school life." Xia He immediately poked her head in: "Yo, girl, do you need a substitute?" PS: Male protagonist story?