Link: https://www.novelupdates.com/series/magic-gems-gourmet/ Description 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 and absorb their abilities, and that I am the prince of a neighboring country! What was waiting at the royal castle is experimenting and training with abundant magic stone, in an environment that brings out the strongest power, finally, the ability of the legendary demon Dullahan is mine! Surrounded by a clumsy fiancée and a female knight, the new life of a boy who will become a “king” begins! author note: The point of view start off as the point of view of the protagonist, but has changed to a third person point of view in the middle. I am sorry for the change, but the third person is the basic way to go. ※ The difference from the book version will be the character’s name and features. The webnovel version of the lightnovel and the manga, it starts slow, very slow, I'm at chapter 16 through the RAWs and still don't know what will become of the MC -- The development is slow. First harem candidate appears at the first chapters too, but the next one... Spoiler: From the raws till chapter 16 As a bonus, apparently we will have "magic steampunk elements" (steam trains with magic stone acting as furnace -- what a waste! High-speed ships with magic stone being used as fuel, "telephone", and so on). For those that need pictures, there are two chapters at mangadex (just look for "gurume"), the third chapter is not published in the original site (probably in 8/2 if I understand correctly that site).