It sounds like you're looking for a (or a serious framework for one) based on the Japanese light novel/manga series Okiraku Ryōshu no Tanoshii Ryōchi Bōei — often translated as The Laid-back Lord’s Happy Domain Defense — specifically referencing the raw manga and possibly the "hot" (popular or scanlated) chapters.
: The manga is licensed in North America by Seven Seas Entertainment. okiraku ryoushu no tanoshii ryouchi bouei raw manga hot
: Initially hailed as a genius due to his adult-level intelligence, Van's status plummets when his magical affinity is revealed as Production Magic . It sounds like you're looking for a (or
The manga Okiraku Ryoushu no Tanoshii Ryouchi Bouei: Seisankei Majutsu de Na mo Naki Mura wo Saikyou no Jousai Toshi ni okiraku ryoushu no tanoshii ryouchi bouei raw manga hot