The Only Player in 'Child of Stardust' - Chapter 100 - 80 The World Within

Xiao Yu, who was a student from modern Earth, accidentally transports to another world and becomes the lord of a territory. Facing an unfavorable situation, he vows to take back his family business, build his new territory, kill all of those who covet his wealth, and dominate the world!

- Description from Novelupdates

When I cleared the final chapter of a game that was a national failure, I became an unnamed side character in it.

A non-standard, unmeasurable, EX rank supporting character.

Young and filial Fu Ting loved her father above all things, so when she had the chance to turn things around from her father’s past, she promised to follow through her mission until the very end.Fu Ting, daughter of a famous actor, watched as her father succumbed to his untimely fall from stardom and his eventual passing. When met with her own demise, the heavens granted her something no one could only dream of⁠—time travel to amend her father’s murky past. Although Fu Pei was a⁠ supposedly⁠ cold-hearted young boy, he could not help but care for his daughter…wait. This is his daughter?!Read a tale of great love, unconditional devotion, and a sprinkle of comedy with us. Just a word of precaution: don’t underestimate Fu Ting!

This is an alternate history. Decades after the fall of the Eastern Jin Dynasty, the world is still in chaos, although there is hope for reunification.