A Survival Guide to the Mary Sue Academy [ABO]

As a scholarship student at Mary Sue Academy, Xuan Dingyue knows exactly where she stands:

She's the heroine's "human shield," a "commoner" in the eyes of the aristocrats, and a cannon-fodder character who isn't even worthy of a name in the story.

She takes a hit from acid for the heroine, takes the blame, gets locked in solitary confinement, and eventually dies on the rooftop, with no one to claim her body.

Until one day, she accidentally helps another invisible person, Zhao Tuo, a gloomy scholarship student with a limp.

Then she gets trapped in an endless cycle of death.

After being reborn for the Nth time,

Zhao Tuo clutches her wrist tightly, his eyes bloodshot. "This time, just look at me, okay?"

Xuan Dingyue: "...But in my last life, you almost blew up the entire country, dude!"

Female lead as B, male lead as O, girl-boy pairing. The heroine has no male genitals.

Blackened, possessive villain x clear-headed, snarky cannon fodder

"This time, either we both live, or we both go mad."

Theme: Stay true to yourself.