Hisato Usui has made a significant mark in the world of animation production, particularly known for his work on the "Towa no Quon" series. The final installment, "Towa no Quon 6: Eternal Quon" (2011), stands out as a collector's gem due to its compelling narrative and stunning animation quality. This film not only wraps up the series but also showcases Usui's ability to blend intricate storytelling with vibrant visuals, making it a must-have for fans of the genre. Collectors are drawn to Usui's work not just for the films themselves, but for the cultural significance and craftsmanship behind them. The "Towa no Quon" series has garnered a dedicated following, and the limited-edition releases, often featuring unique artwork and special features, are highly sought after. Owning a piece of Usui's filmography means possessing a slice of contemporary anime history, appealing to those who appreciate both the artistry and the evolution of animated storytelling.