There was a unique VR game called 'Monsters Evolve.' Unlike other games where you hunt or command monsters, this game lets you become a monster. The online version of this game, which gained a peculiar popularity, is now available as a VRMMORPG titled 'Monsters Evolve Online.' Keigo Yoshizaki, who was hooked on the offline version, immediately bought the online version and started playing. However, many changes were made from the offline to the online version, with the most notable being that the initial race is randomly determined. Keigo's randomly assigned race is 'Moss,' and he must figure out how to progress in the game. Using one of the most unusual races in an already unique game, he embarks on a journey in a world without humans, experimenting and discovering various things, competing and fighting alongside different plant and animal companions. The story is currently being serialized on Kakuyomu, and the fully revised e-books from volumes 1 to 18 are available on Kindle. Another story set in the offline version, 'Relay: Monsters Evolve ~A Beginner's First Playthrough Stream~,' is also being serialized. Unauthorized reproduction and translation are strictly prohibited.