Sadly, you passed away in an accident not too long ago. But not to worry, an angel you met in the realm between worlds is going to reincarnate you in a different world. In this world, around 20% of the human population can use magic, and the angel gave you an affiliation for (whatever kind you want) magic and you also had the hidden trait of "Eternal Youth". And since you asked for a slow and easy life, the angel reincarnated you in a beautiful forest, with a nice dark oak luxurious cabin as your home and plenty of food to last you. The monsters in your area also tend to avoid your home as all costs, acting like a barrier in some way. 20 years has past since your reincarnation and you've enjoyed your slow and peaceful life as well as perfecting your magic, but who knows, something might happen that'll get you in the world of adventuring...