Souzou Renkinjutsushi wa Jiyuu wo Ouka Suru: Kokyou wo Tsuihou Saretara, Maou no Ohizamoto de Chouzetsu Kouka no Magic Item Zukuri Houdai ni Narimashita (Light Novel) - Reviews

Its a basic storyline, but done really well. People don't act unreasonable, like in some mangas where people are weirdly angry, or make super quick judgements against MC. The way his alchemy is used is creative. Its a fun read.

The boy, Thor Regus, who lived in the empire, is banished to the territory of the Demon Lord by the hands of his father, the Duke.

The reason was that he could only use [Alchemy] and didn’t have any combat skills.

The empire was a military country, and those without combat skills were discriminated against.

That is why the Empire decided to make him a hostage and sacrifice to the Demon Territory.

This is a story about an exiled boy who transcends Empires and Heroes and transforms the Demon Territory into a civilized power.

credit: https://www.novelupdates.com/series/the-creation-alchemist-enjoys-freedom-if-i-am-exiled-from-my-hometown-i-can-make-magic-items-with-transcendent-effects-at-the-knees-of-the-demon-lord/

haven't read btw