A nameless mercenary who died on the battlefield awakens in a fluffy, light brown body. He has been reborn as a kobold, a dog-like monster with a human-like form. Unable to speak at first, he fights against the absurdity of his situation, leading the weakest of the dog-like races, with an average lifespan of only 10 years, to climb the ladder of evolution. This story is grounded in reality, incorporating elements of physics, natural science, medieval-era culture, vegetation, and religion. The combat and strategy are based on real-world military history and martial arts. The protagonist's journey is one of growth and evolution, starting from the bottom and aiming for the top. While there is a protagonist bias, leading to gradual power-ups, the story focuses on realistic combat and strategic elements. The protagonist will eventually evolve beyond being a kobold, possibly becoming a werewolf or mastering the kobold form. The novel was ranked 12th out of approximately 750,000 works and received the Daily Overall Ranking 1st place and was adapted into a book.