Bouken ni, Tsuite Konaide Okaa-san! Chouka Hogo na Saikyou Dragon ni Sodaterareta Musuko, Hahaoya Douhan de Boukensha ni Naru

Ryuuji, who was an orphan, was picked up and raised by the world's strongest evil dragon. When he turned 15, he had intended to leave the house and be independent, but his mother proclaims that to do so he must defeat her. "But you're LVL999! How the hell am I supposed to do that?!" Somehow, he manages to persuade her and is allowed to journey out, however, she ends up joining him as his companion. Having his overprotective mother by his side, suffering and misfortune continue to pour in. Will he be able to stand on his own as an adventurer and as a man?