Level Up Just By Eating is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

The Useless Goddess Laura whose only strong point is having huge breasts, And the boy Kehma who was summoned to another world. Gaining a cheat skill that absorbs the abilities of what he eats, he enjoys the other world life eating delicious monsters and playing with the easy to handle Goddess.