Fantasy Invasion, I Build a Mecha to Fight the Dragon!

A short story about a mecha written in the form of a multiverse, which is a free-spirited work after being thrown into the street. Chapter 1: "Mecha! Mecha!" (Chapter 1-Chapter 88, completed) It tells the story of the first-generation Equation living in the solar system who entered the top mecha corps "Blue Dragon Team" and went from being a newbie to the new king "Orange God". Chapter 2: "Mecha Castle" (Chapter 99-, currently being serialized) It tells the story of Equation being reborn in the Middle Ages and becoming a medieval manor owner with a mecha.