Five Hours to Kill the Demon King

You’ve crossed the kingdom, gathered your companions, and finally reached the Demon King’s castle. Five hours remain until the final assault. All you have to do is kill him. Then you die. And wake up five hours earlier. Every death sends you back to the beginning, but your memories remain. Learn the castle’s secrets, master your enemies, grow stronger with every attempt, and find a way to finally kill the Demon King.