Quick Transmigration: Playing the Perfect White Moonlight

Aria Larkspur is the most reliable agent of the Dimensional Transit Bureau, an organization that repairs unstable storylines across countless worlds. When the dangerous White Moonlight Series begins collapsing, Aria receives a high-risk mission: enter each world and become the male protagonist's unforgettable "White Moonlight."
A White Moonlight is the most beautiful memory in someone's heart-the person they loved deeply but could never truly possess.
Aria's task seems simple: gain the male lead's trust and stabilize the storyline.
But every world proves far more dangerous than expected.
Some male leads are cold and suspicious.
Some are broken and obsessed.
Some refuse to let their "moonlight" leave at all.
The deeper Aria goes into the mission, the more tangled the emotions become. Memories blur, trust rises dangerously, and hearts refuse to forget her.
Soon Aria realizes a terrifying truth.
Being someone's White Moonlight doesn't mean being loved from afar.

Also published on royalroad under the same name
Sometimes...
It means becoming the one person they will never let escape.
Arc 1 - Broken Moonlight
After waking from a coma, Aria faces her childhood friend's cold revenge while pretending amnesia to rebuild trust.
Arc 2 - Guardian's Moonlight
Aria saves a bullied boy destined for greatness, but years later his devotion turns possessive, blurring guardian, savior, and love.