Douluo Dalu: Devour Lan Xuanyu and Become Gu Yuena's Disciple

[Douluo 4: Ultimate Douluo fan fiction] The protagonist transmigrates into the world of Ultimate Douluo and appears inside an egg, where he gains a God-Tier Choice System. Choice One: Devour and fuse with everything belonging to Lan Xuanyu, gaining extraordinary talent. Choice Two: Give up devouring, become Lan Xuanyu's younger brother, and be unable to awaken a Martial Soul. He decisively chooses the first option and devours Lan Xuanyu, obtaining the bloodlines of the Golden Dragon King, Silver Dragon King, Blue Silver Emperor, and the Sea God and Asura God. He completely fuses and purges the bloodlines associated with Tang Wulin, Tang San, Ah Yin, and Gu Yuena, upgrading them to the Ancestral Dragon bloodline. Later, he is adopted by Lan Xiao and Nan Cheng, takes his adoptive mother's surname, and is named Nan Tianyu. Lying in Mama Nan Cheng's arms, Nan Tianyu blinks his big eyes, a thoughtful look in them: “Are Tang Wulin and Gu Yuena my birth parents? No, they aren't!” “Of course Tang San and Xiao Wu aren't my grandfather and grandmother either. I transmigrated here, so the entire Tang family has no blood ties to me. My only family are my adoptive father, Lan Xiao, and adoptive mother, Nan Cheng. Hmm... that Gu Yuena, I choose you!”