Sumomo YumekaSumomo Yumeka.

Sumomo Yumeka (夢花 李, Yumeka Sumomo) is a Japanese manga artist, who also writes as Mizu Sahara (佐原 ミズ, Sahara Mizu). She writes in a variety of demographics, publishing yaoi manga as Sumomo Yumeka and seinen manga as Mizu Sahara. She is best known in the west for The Day I Became a Butterfly and Same Cell Organism, both under the Yumeka byline, and the manga adaptation of Voices of a Distant Star under Mizu Sahara.