|Alias||Sister Sumire (シスター・スミレ, Shisutā Sumire)|
|Affiliation||The Holy Sol Temple|
|Manga||The Flower of Promise|
Sumire was an older woman who attended The Holy Sol Temple, where she wore a habit, which consisted of a tunic, covered by a scapular, and a veil, dark shoes and a pendant with a cross-like insignia as a charm.
From what little seen of Sumire's personality, she was reluctant to allow Hibana to play with her prowess as a Third Generation, showing a cautious, but a compassionate side.
Sumire attended The Holy Sol Temple, where she took care of children such as Hibana and Iris. One day, when the Human Body Ignition Phenomenon struck the temple, her life, along with the lives of many other sisters attending the temple, was taken by the flames — an event that led to Hibana losing her faith.