It's Akikan 40-Sama new stuff of legend.... Although I prefer you to continue the other one, but it's okay!!! Wow... First chapter and I already "Wait a minute... Bazooka d1ck? Now why did that sound familiar yet different?..."
I got confused when was mentioned that the MC has long hair since Lancelot in his youth has short hair. I guess the MC is a young Lancelot with long hair like the adult Lancelot.