Kyoukai Meikyuu to Ikai no Majutsushi

After being callously cast into a waterway by his own half-brother, Theodore experiences a sudden and overwhelming flood of memories from another life. He realizes he was once Kirishima Kagehisa, a Japanese man who spent his time immersed in the virtual reality MMORPG Break Force Online. More remarkably, he has been reincarnated directly into the body of "Theodore," the powerful combat mage character he had originally created within that game. As he comes to terms with this startling revelation, Theodore discovers that the unique skills and magical proficiencies he cultivated in the digital realm are fully functional—and even thriving—in this unfamiliar new reality. Armed with these formidable abilities, he effortlessly shrugs off his half-brother's betrayal, refusing to let such petty malice dictate his future. Instead, he resolves to carve out his own independent path in this strange world. Driven by ambition and the desire to forge his own destiny, Theodore sets his sights on Boundary City, Termuilles. This sprawling metropolis is home to a massive, mysterious labyrinth, presenting the perfect proving ground for a combat mage of his caliber. Venturing toward its depths, he prepares to test the true limits of his otherworldly magic and claim his place in a realm where his past gaming experience might just be the key to survival.