Realist Maou ni Yoru Seiiki Naki Isekai Kaikaku

Hey there! So, there’s this manga about Astaroth who wakes up in a rundown castle and suddenly becomes a Demon King. He’s got all this wisdom from his past life and decides to rule his lands with a practical, no-nonsense attitude. It’s a pretty interesting read, if you’re into that kind of stuff!