A seventeen-year-old university student finds himself on a different path of life than he would want to, when he finds himself becoming a witness to a battle between a mage and a supposedly-extinct monster. Wielding a forbidden belt buckle and a trinket that appeared from nowhere, he becomes the Rider of myths and legend, Kamen Rider Shinwa! Wikia: https://kamenriderfanfiction.fandom.com/wiki/Kamen_Rider_Shinwa