Read Manga Isekai Saikyou no Yome desu ga, Yoru no Tatakai wa Ore no Hou ga Tsuyoi You desu ~Chiryaku o Ikashite Nariagaru Harem Senki~:
Reincarnated in a distant realm, Albert sought a quiet existence in the Kingdom of Alexa. But Marida, a female vampire from the Bloodthirsty Vampire species—a breed of demons considered as the strongest monsters on Earth—took him away. In addition, he was declared a wanted man in the kingdom after it was alleged that he had assisted in the attack. Albert chooses to reside in the Empire of Eranzia after being unable to return to his home nation. Intimate moments with Marida’s seductive body aside, he applies his contemporary knowledge to accomplish remarkable feats in strategy, military affairs, and government. Here begins a rather risqu harem comedy!
