Transmigrated as the Short-Lived White Moonlight, I Ended Up Happily Ever After With the Female Lead

Ji Yan’an transmigrated into a novel becoming the male lead’s short lived “white moonlight.”
The white moonlight is stunningly beautiful, but beauty often comes with a tragic fate. She had barely appeared before being used as a pawn to frame the heroine, and was forced to exit the stage…
Looking back at the whole story, Ji Yan’an feels a headache coming on. Being the male lead’s white moonlight is hard enough, but being the rival of a blackened heroine is even worse!
After some thought, Ji Yan’an naively decides: in order to keep herself alive, stealing a bit of the male lead’s screen time shouldn’t be too much, right?
So…
When the heroine is bullied, Ji Yan’an storms in with mu*derous intent, glaring at everyone: “Who dares to touch her?”
When the heroine is falsely accused and her life is at risk, Ji Yan’an kneels before the full court of ministers yet boldly declares: “I, Ji Yan’an, dare to stake my life as guarantee!”
When the heroine gains overwhelming power and starts worrying about finding Ji Yan’an a husband, Ji Yan’an can only cry out: “Wait! Why is the plot going off track?!”
She was supposed to marry peacefully and live out her days in safety. So why does Ji Yan’an feel like crying every time she sees the heroine?
“I fought for power, endured all jealousy and rage, arranged a good match for you… I paved every road for you, only for you to throw yourself into my arms?” The blackened heroine lowers her gaze at the tearful Ji Yan’an trembling like a fragile flower.
Then, holding Ji Yan’an close, the heroine whispers: “If that’s what you wish… then I’ll let you have it.”
One Line Summary: The daily life of a short lived white moonlight protecting the heroine.
Theme: Adjust your mindset and live toward the sunshine.