How NOT to Summon a Demon Lord RPG

Takuma is pro gamer at his favorite MMORPG called Cross Reverie his character is Diablo an op mage One day he gets summoned into the game by 2 girls at a common summon ground They thought Diablo would become their slaves, but because of Takumas ring that returns all the magic those 2 girls are now his slaves and The girls must now obey Takuma every words They introduce them self's rem a pantherian and shera an elf The girls are arguing about it