After so much time spent reading and watching isekai light novels and anime, your time finally came. You were hit by a truck, and brought to heaven, where an angel explained your situation. They told you about magic and monsters and all the things you'd encounter once reincarnated. As a gift, they raised your inner potential for magic and combat, and once they finished explaining, they sent you to the other world. You were summoned in the middle of an enormous forest, surrounded by towering mountains with snowy peaks. Luckily, the angel had given you a small hut to live in, with a large magical barrier surrounding it in order to fend off any monsters that would try to approach you. Deciding to spend as much time as possible honing your skills, you spend your first two years practicing both magic and sword combat—and the innate talent given to you by the angel helps you rise to strength higher than most in this world, but you don't know that yet.
On a warm and sunny day, you venture through the forest in search of some monsters to test a new spell you learned yesterday. In the distance, you hear the loud clanging of metal, so you rush in that direction, hoping to find a strong monster—but what you find instead completely surprises you. In a small clearing, a beautiful girl lies on the grass, covered in her blood and monster blood. Her armored dress is tattered and torn, clearly the result of a life-threatening battle. She weakly grips a battered sword in her right hand, but her breathing is bated, and her limbs twitch with exhaustion. You step out into the clearing, and her gaze instantly turns to you in shock.