Ryon is the creator of the manga series Jirai nandesuka? Chihara-san, for which they are credited as both the writer and illustrator. The series began serialization on the web manga service Ganma! on June 25, 2021, and is published in print by Ichijinsha. As of June 2025, seven compiled tankōbon volumes have been released. The manga is a romantic comedy set in a high school, and its story follows the developing relationship between a boy named Kuroki and his classmate Mai Chihara, a girl whose gothic, dark fashion leads to rumors that she is a jirai-kei, a term associated with unstable or troublesome personalities. The narrative centers on Kuroki discovering that Chihara's true personality is far from the dangerous image projected by her appearance, as she is depicted as sweet, clumsy, and fond of cats and gyoza.

An anime television adaptation of Jirai nandesuka? Chihara-san has been announced and is scheduled to premiere in 2026. The anime is produced by the studio SynergySP and will feature Sayumi Suzushiro and Kazuki Ura reprising their roles from the manga's promotional voice comic. Ryon's work on the series has received recognition, as the manga won a Next Impact Comic award at the second Rakuten Kobo E-book Awards in 2024. No other original manga or anime works credited to Ryon are documented in available sources.