Rain, an enhancement grantor who strengthens equipment and supports his fellow guild members, is expelled from the guild for the selfish reason that he has already strengthened all their equipment. Rain, who had been able to retrieve the enhancement magic just in case, retrieves all the magical power he had used on the guild's enhanced equipment. With an enormous amount of enhancement magic power in hand, Rain decides to enhance the copper sword and cloth clothes he has on hand for the time being...? A cheat great adventure starting from the weakest equipment!