How NOT to Summon a Demon Lord 1

An elite, but socially-stunted gamer finds himself in another world, inhabiting the body of his character Diablo! But despite his powers, his awkwardness keeps getting in the way - so he decides to pretend to be a Demon Lord and soon finds himself with a pair of slaves: a well-endowed elf and a cat girl. Together, they struggle with everything from interpersonal relationships to diabolical beast battles!