Farmboy becomes King with the Lust System

prince solas is the seventh son of the king and he is also the most useless one day his castle is attacked and he dies inthe process but his story doesn’t end there, he is reincarnated as a farmboy named Jae Hyun he also now has a lust system that helps him get stronger by lustful acts with women and killing monsters. he joins the royal academy and becomes the best mage in the kingdom