This series tagged with #Isekai #Shoujo #Romance #Smut Help me to remember title this manha, last time I read about early 2020 Main Character Heroine, formerly from Japan, now daughter from rural noble, something like edge of earth because her land only can be access with one way and surrounded by mountains. She rotten fujoshi, but have excellent brain to developed her land use her memory from earth. Build Train, Car, weapon like gun etc. Have blessing from goddess of wisdom and knowledge Husband, he prince also as undefeded warrior always win wars. Too excellent that make his father, king scary and kick him to married rural noble daughter. When in military he have relationship with his collage (yaoi) and now he become his loyal aide. Love his rotten wife. Have blessing from god of war. Heroine always want her husband to back with his aide, his husband now straight and devoted his love to her Support char Merciless king elf king, loved by his people, he only kill one person, his brother because his brother rape his fiance and make her pregnant, she dead later. He want child from his fiance x brother to become king and love him like his children Maritim king, look always so youth that make he and his son like brothers, have Asian like culture (Japan? Chinese?) Barbarian king, he... Bisexual emperor This manga have high sugar dose, but many gay bait. Everytime characters is interesting. Anyone know the title?