You've Got Mail: A Cautionary Tale - Chapter 6 - Adviser, Your Pengornis

This is a story about a young man who sought to fight against his destiny. With the help from billions of Dragon Energies trapped on the Rising Dragon Pillar in his body, he emerged from the dark and quenched himself with the blood of ancient dragons. He fought the heaven with the Buddhist Art for the people he loved and built the Eternity Kingdom with his own hands. This is a story about the rise of the Martial Emperor who will rule both earth and heaven.

- Description from Novelupdates

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

[House of Dragons, Game of Thrones Prequel] The heir prince known as the One-Day Heir should have died young, but Rhaegar stubbornly survived.Being born sick and weak cannot defeat him, and losing his qualification as an heir cannot make him give up on himself.Using the Explorer system, he will explore ancient relics and embark on a legendary conquest that will span the Seven Kingdoms.Explore the Skull of the Dark Terror Balerion: Dragon’s Legacy (50% Fire Resistance)Explore the White Hart: A desire for LongevityExplore Blackfire and Dark Sister: King’s Gaze and Knight’s Oath.Rhaegar tamed his dragon, took the Iron Throne, and destroyed all who stood in his way.Winter is coming, and I have ridden my dragon to meet it.*Important Note*In the original narrative (Lore), the one day heir prince was named Baelon, in honor of Viserys’s father.However, the author, disliking the name Baelon, opted for Rhaegar, inspired by the Prince Rhaegar in Game of Thrones.