Maseki gurume ~ mamono no chikara o tabeta ore wa saikyō!~ (Associated Names)

Thanks to the benevolence of a Goddess, I got reincarnated as a noble! It should have been fine, but the skill I received, [Toxin Decomposition EX], is too plain, and everyday I am fooling around at home. However, at some point of time, I discovered that this skill can eat the magic stones of monsters…