A young boy, Kazusa Yuu, who had a slightly unusual hobby, was supposed to have left this world at a young age. However, when he came to his senses, he found himself in an unfamiliar forest. Despite being thrown into a world where even basic necessities are not guaranteed, Yuu cannot hide his excitement. This is because he is now in an environment where his hobby, which was laughed at as useless on Earth, can finally be put to use. Yuu's hobby and specialty are 'survival knowledge' and 'interest in unknown ingredients.' To him, the other world is a treasure trove of unknown ingredients, and it is the first place where he feels truly appreciated. By using his simple cheat ability to gain the power of the monsters he eats, Yuu travels from one magical realm to another, eventually eating his way through the entire world. 'R-Really, you're going to eat that...?' 'In the magical realms of the other world, it's a valuable source of protein.' Eat, get stronger, and eat again! A story of survival and food in a fantastical other world.