 To date Hikari no Densetsu is by far her longest manga series.After Hikari no Densetsu she continued to work in other of her manga series where she would later on be seen using more tragic themes and other mature experimental themes found in her more famous work of manga, like the triangle love themes, that were absent in the beginning of her work.Parallel to "Hikari no Densetsu", Izumi began to work a comedy called "Natural", which after "Hikari" is the second most longest manga series with 9 volumes.