Dragon Slayer and Professional Counterpart

"Dragon Slayer, Professional Match" Core setting: Dragon is a super-large magical creature that periodically sheds and regenerates, has tender meat and is full of treasures. The so-called "dragon slaying" is actually the largest and most professional animal husbandry in the magical world. In his previous life, Roland was a top student who graduated from the "Pig Breeding Agriculture and Veterinary College", specializing in "Efficient Slaughtering and Comprehensive Utilization of Resources." He returned to his hometown with advanced bloodletting technology and ethical slaughtering concepts, only to find that the place was still ruled by the ignorant legend of "heroic dragon slaying". Roland not only has to deal with the dragons that are "out of the market" periodically, but also has to battle wits and courage with the conservative old-school dragon slayers. He also has to prevent his "products" (dragon liver, dragon blood, and reverse scales) from being priced down by profiteers in the market. Don't talk to me about glory, our business is all about meat yield and profit.