Eyes Set On This Magical World

One day the shut-in life of a blind 17-year-old boy named Kazuki Maiyato comes to an end when he was forced to go out because of his depleting health, he falls into a manhole where he is approached by a mysterious man who asks him to save a world that has been cursed by a cursed sword. So Kazuki got transported to a different world other than his and was granted a power. He gained vision and sight so instead of doing his task of saving the world from the curse he instead decides to live his new life now with the ability to see to the fullest. So he lives his new life in this world but the problems that are occurring still catch up to him.