By the time Souichi woke up, he had become a demon lord who controlled the meaningless power of "deadly sins." Moreover, in a world where many demon lords are competing with each other, he has a mysterious binding that can only summon the weakest rank monsters, and he is ridiculed by other demon lords and demons. However, that "deadly sin" has the power to transform the weakest monsters created by the rewards of "gacha" and "blending" into the strongest. The "deadly sin" demon lord Souichi decides not to destroy people, but to create a country where oppressed demons and people can live happily and happily in various places. .... Create the strongest monsters (friends) with "gacha" and "combination"!! Significantly revised & newly written revised version!!