I Became an Evil God in the Middle Ages [Western Fantasy]

Lucien transmigrates to another world with his level 90 Archfiend character, and he can always hear all kinds of prayers: “I wish I were prettier.” “Make me rich.” “Give me a promotion and a raise.” The Oga Continent once had a god, the only god there ever was, but he disappeared a very, very long time ago. One day, the god answered: “Get lost!” “Have you even passed the basic literacy test? How dare you make a wish to me?” [The weather is changing dramatically, harvests are failing, and the world is about to enter a Little Ice Age.] [Half the world's population will die of famine.] [Nations are fighting frequent wars to seize resources.] At this time, in the small town of Lane, on the edge of the Domit Empire. Lucien: “Can someone tell me where our way forward lies, with food production falling so drastically?” Villager One: “We need to breed better crops and advance hybridization.” Villager Two: “We should consider fully mechanized farming to improve efficiency.” Game System: [Ding! Successfully teach ten villagers basic literacy. Unseal item unlocked: Lord's Appointment Letter.] [Ding! First school successfully established, with one hundred children who were unable to attend school enrolled. Unseal skill unlocked: Holy Light (Fake).] [Ding! Congratulations on achieving the “Teacher of Ten Thousand” achievement! This is a small step for you, but a giant leap for humanity! Unlocked: the complete series of advanced mathematics textbooks from all universities.] Villager Three: “My lord, the conditions are right. Can we start the space breeding program?” Lucien: “Just let the world end already.” God said he wanted a star, and so another star appeared in the sky. Also known as: “The Last God” “So I'm a God?” Theme: Knowledge is power