Snakesmen are a type of swordsman who can turn snakes into blades using spiritual essence. They hone their skill at Hebitana High and use their ability to slay Fallen Angels. This story follows a 2nd-year Snakesman at Hebitana High, Rosi Margiela. A boy who joined Hebitana High to live the battle shounen lifestyle and nothing more. Until, one day, he acquired the most powerful snake by accident and became the center of attention. Things go from good to bad quickly, and now he needs a way to deal with the attention he’s been getting.