King of the bow and bitches (GOT)

A man dies in the 80's and ends up reincarnated as the mad king's second son, unaware of the plot, he enjoys his new life with riches and women not even knowing that his family is about to fall into disrepair, being taken by surprise by a civil war, he must use his little knowledge to become a good heir after the death of his brother Rhaegar (in his past life he competed in professional archery, that will be his advantage)