Rise of the Polabians

Tomislav, dies in a sudden accident - only to awaken in the past. He finds himself reborn as Vislav, a 17-year-old boy of the pagan Rani tribe on the Baltic island of Rujana in 1100, a land caught between strong neighbors and inevitable conquest. Armed with historical knowledge, and a modern understanding of warfare and statecraft, Vislav begins a long and brutal struggle to survive. Only blood, discipline, and hard choices in a grounded medieval isekai about war, nation-building, and the price of survival.