Supposed to be the weakest monster, but making a great advance with a cheat-grade skill!? A rising fantasy of becoming the strongest together with a Slime! Alkus, who belonged to the adventurer party “Brutal Blade,” was suddenly kicked out one day by the leader, Dan, on the grounds that his skill was useless in battle. However, Alkus’s skill [Slime] had the abilities of “Mimicry,” which allowed him to transform into a slime, and “Division,” which created clones of slimes. Furthermore, there was a secret that the experience points gained would double by the number of divisions. Having learned the secret of his skill, Alkus continues to level up rapidly with his cheat-grade skill——?