A young adult dies from a fever and is reincarnated in the World of Genesis, a world of swords and magic dominated by a strange and mysterious Game-like System as the weakest being, a Caterpillar! Gaining abilities from the monsters that she devours, Kireina uses her sharp adaptability and wits to overcome the odds against her in a world where everyone wants to eat her alive! As Kireina evolves and gathers a group of followers and subordinates, discover how our protagonist builds a monster Kingdom from zero, in a world dominated by Humans, terrifying Monsters, and arrogant Gods who only wish her death! In front of her enemies, there will be only two options! Will you obey me or will you be eaten?