Question

Hi i cant remeber a title of manga that i once read mayby you can help me.

manga have a similiar concept to the dungon oddesay. with change. starting condition main character was isekaid. he is shown as a unregognizable mass of dark matter. his dungon is strictly evil despite his moral good decisions. i think the kingdom name was Mora. the isekaid word was based on a game where it was a worst kingdom in a military aspect. its resolved its issues with assasination and diplomacy. thanks a lot for any form of help