As of my last update in early 2023, Miri Mikawa is a Japanese author known primarily for her work in light novels. A light novel is a style of Japanese novel primarily targeting middle and high school students. Her works are often characterized by fantasy elements and sometimes feature romance. Light novels are typically illustrated in a manga aesthetic and can be serialized into other formats such as manga or anime. One of her notable works is "Sugary Days," which is the side story to the popular light novel series "Sword Art Online." It chronicles the in-game "honeymoon" adventures of the series' main characters Kirito and Asuna. Mikawa's ability to capture the essence of established characters and her contribution to expanding the "Sword Art Online" universe has endeared her to fans of the series. Please note that information about some authors may be limited and it’s possible that more current or detailed information about Miri Mikawa could be available. If you’re interested in her writing, I would recommend looking up her work directly or checking the latest updates from sources focused on the light novel industry or Japanese literature.