Age
14
Origin
Caliture City
Rem Galleu is one of the female protagonists of the series. She is a Pantherian who became an invoker and had no choice but to become an adventurer and continue to demonstrate its strength, saying to aim to exterminate the Demon King Krebskrem. It is later revealed that the soul of Krebskulm is sealed in her body and in case she dies the soul will be released. She is a short Pantherian girl with long black hair that grew down all the way to her waist. Her ears and tail are both equally a beautiful black color that is rare even among Pantherians. Her cat-like, almond-shaped green eyes and spruce eyebrows seem expressionless like a doll and made one feel the strength of her volition. She has a slender body type. From her sides that had her ribs lightly showing to her toned arms and legs, her body has no uselessness in it. Her clothes were a vest that went to her chest, had shoulder pads attached, and was hanging from a jacket, and a wide leather belt coiled above her waist. It had a great number of pockets attached. She wore a skirt of layered cloth around her waist and skin-tight short shorts/spats underneath the skirt. She is really uncomfortable concerning her small chest, as it's not only rare for a Pantherian but also she sees it as a huge disadvantage in trying to win Diablo's affections. She doesn't object very convincingly when Shera plays with her body, and she blushes when Diablo has her share Alicia's bed until such time as Rem gets accustomed to the idea of sharing a living space with Krebskrum. Despite devoting her entire life to destroying Krebskrum's soul, when she gives birth to Krebskrum, she's among the first people to come to Krebskrum's aid, and save the little girl's life. Rem is understandably quite confused and conflicted over this. While she does like shows of affection, she easily gets wildly flustered when such affection is even remotely public. Further, whenever she catches Shera in anything remotely erotic with Diablo, she gets quite angry, both because she thinks it's inappropriate and because she feels left out. Later on, she starts to, instead of getting jealous that she's being left out, will insert herself into and mimic whatever it is Shera is doing. She's pleasant and cordial with just about everyone she meets, it's only those to whom she gets close that see her honestly snark, quarrel, and pout.

How NOT to Summon a Demon Lord
In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist "I am the real summon master." Takuma gets slave-turning magic used for summoned beasts cast on him by the girls― However, the peculiar ability "Magic Reflection" is invoked! The ones that were turned to slaves were the girls! Takuma was bewildered. He's the strongest magician but, he doesn't have any social skills. Panicking, the first words that came out were the ones that he used inside the game role-playing the Demon King?! "I'm amazing you say? Of course I am. I am Diablo... The one feared as the Demon King!" This is the story the Demon King (acting) that would soon inspire the world and his other world adventure that he plunges through with his absolute strength, raise the curtain! (Source: MU)

How Not to Summon a Demon Lord Ω
After being summoned to another world similar to the game he used to play, Diablo lives a tumultuous life in this new world after he finds himself the unwitting master of Rem the Pantherian and Shera the Elf; and now, even the Demon Lord-turned-young-girl Klem obeys him! One day, Diablo ends up rescuing a holy woman who was being pursued by a Paladin, and she turns out to be the most important person in the Church. Befriending her, Diablo and the others act as her escorts until they reach Zircon Tower deep in the Demon Lord’s territory. After arriving in a new town, more difficulties arise, ultimately culminating in the appearance of a gargantuan monster attacking them! Is the self-proclaimed Demon Lord becoming a guardian deity for a follower of the Gods!?