Yoroi no Himegimi Tachi Aruiwa Maho Sekkikan Kogakka no Mao niyoru Shakai Keiyaku Ron (MF Bunko J) [Light Novel]

[Machine Translation] How do you do? Let's make a harem in another world with me! I've never had a girlfriend before. But I've never had a girlfriend before. Tatsuhiko, who made a promise to the primordial dragon Tiamat (gender unknown) with a very light heart, visits the "Empire" where humans and demons coexist and weave their history. Or rather, he was dropped off. The first girl he meets there seems to be his destiny and a member of his harem, but...? Dragnir, an empire of humans who believe in dragons. Tatsuhiko, who has discovered the invisible struggle between humans at the Dragneel Academy, the highest academic institution of the Dragneel Empire, builds a society together with Nefertia, using the techniques of mind control and psychological warfare that earned him the name "Demon King" in the present world. A story of a monster of love and the creation of society!

『はじめましてこんにちわっ!我と一緒に異世界でハーレムを作ろうよっ!』「オッケー。でも、おれ、彼女いたことないけど大丈夫かな?」ものすごーい軽い気持ちで始原の竜・ティアマト(性別不明)と約束を交わした人間竜彦は、ヒトと魔族が共存し歴史を紡ぐ『帝国』を訪れる。というか落っことされた。そこで初めて出会った少女が、彼の運命の相手であり、ハーレムの一員らしいが...?竜を信仰するヒトの帝国・ドラグニール。その最高学府である学園で、ヒト同士の目に見えぬ争いを看破した竜彦は、現世で「魔王」と呼ばれた人心掌握と心理戦を用い、ネフェルティアと共に社会を構築してゆく。愛情の怪物・社会創造の物語!