My Life as the Billionaire They Mocked - Chapter 17 -: Sienna asked to get back together(Part 1)

To pass as an imperial concubine, one must be professional.

Actually, the profession of an imperial concubine is pretty good. The emperor will accompany you in eating and drinking, and even pay you for it. What’s not good about that?

- Description from Novelupdates

How could a poor graduate student without any background or connections become successful? With a coaching system? An upgrade? This is not a computer game, but real life we’re talking about!

After causing a tech disaster in the real world, genius shut-in Rin Katsuro is sentenced by the gods and banished to Ereborn—a realm ruled by chaos, where ancient scripts control magic and dungeons feed on trauma.He wakes up in the body of a legendary war criminal—the Demon King's General—and is mistaken for the adoptive father of a demon princess.Armed with unstable “Error Magic” that lets him rewrite reality like code, Rin doesn’t want to be a hero... but when angels declare war on the demon races, and his daughter calls him “Papa,” he might just rewrite fate itself.This is the story of a broken man with nothing left to live for—until an entire world starts calling him Dad, Demon, and Destiny.

A novel adaptation of K, focused on the history of the blue clan and the events which led to Munakata Reisi’s appointment as the current blue king.