The enchanter Rain, who can give 'enhancement points' to all kinds of weapons and armor, is suddenly fired from the adventurer guild he belonged to. The guild members, who once considered him a friend, only saw him as a useful tool. In retaliation, Rain recovers all the 'enhancement points' he had given to the guild's weapons and armor, leaving them weakened. Now, Rain uses his ability for himself, creating the strongest weapons and armor, and begins a carefree life and unparalleled battles as the strongest weapon and armor user in history.