My Childhood Friend Came Down from the Heavens

Yu Yu is the heroine of a childhood-friends romance, but her childhood friend and the devoted second male lead were stolen away by a heroine who transmigrated into a book. Yu Yu is willful, selfish, domineering, and spoiled, while the transmigrator acts pitiful and plays the perfect sweet-and-innocent social climber.

After coming to her senses, Yu Yu realized that whenever she couldn't control her temper, she was just following the plot.

The transmigrator has already won over the devoted second male lead and is stepping up her efforts to win over the childhood friend, too. Yu Yu takes it in stride and, while the other girl isn't looking, effortlessly wins the neglected second male lead for herself.

When the transmigrator comes to her senses and prepares to go cry to the second male lead, Yu Yu looks at the childhood friend who's been left alone. Winning him over seems like too much trouble, so she happily decides to give up.

One day, the childhood friend suddenly blocks Yu Yu in an alley as if he'd dropped straight out of the sky. Gripping her waist, eyes red with hurt and restraint, he whispers in her ear, "Yu Yu, don't you want me anymore? I've waited for you for so long. Why haven't you come to find me?"

??? Huh? Young man, weren't you won over by the transmigrator heroine?

The blurb has been screenshotted.

Theme: Even if you get a head start, what isn't yours still won't be yours.