I'm a Villain in My Own Game?

Genre: Isekai Fantasy, Action, Adventure, Romance Tags: Academy, Knight, Magic, Saint, Anti-Hero, Hated Protagonist, Empire, Noble, Demon, War, Politics [Daily Updates] Word Count: 1,500–5,000 words per chapter [Arc 1 — Survival Test ~ 52 Chapters] [Arc 2 — Academy Tournament ~ 27 Chapters] [Arc 3 — The Chosen Saint ~ 37 Chapters] [Arc 4 — Aragonian–Venetian Wars ~ 55 Chapters] [Arc 5 — The Corrupted Tree of the Elven Forest ~ 43 Chapters] [Arc 6 — Noors Rebellion ~ ???] A game developer suddenly finds himself transported into the very game he created, inhabiting the body of one of its antagonists. After witnessing the suffering of countless people caused by the scenarios he and his team had created, the protagonist swears to do everything in his power to prevent—and at the very least, minimize—the casualties brought about by the disasters they had designed for this world. What can we expect from this novel? First, it's an action genre with a power system similar to those found in Korean Web Novel and Japanese Light Novel. Second, it's clear character development. Third, the MC isn't given any OP Skill; he simply uses his knowledge to create effective tactics in battle. Fourth, the story is structured with a story arc format. Fifth, This novel is a long novel, so don't expect the characters to show depth or complex dynamics in the early chapters.