|Relationship Status||In a relationship|
Sumireko Hanabusa is one of the main characters from "Akuma no Riddle". A former student of the 10th year's Black Class at Myojo Academy. She's considerably warmer to people than Tokaku is, but she's hinted to be one of the more dangerous members of the Black Class which was proven true later on in the series.
- At the fourth manga volume cover and some of the manga volume covers, she was connected physically and emotionally with Mahiru Banba by a strong bond.
- At the ending of the last chapter and at a volume cover she was touching Mahiru's cheek with admiration.
- In the final chapter, it's shown that she is back in her mansion in good condition and employed Mahiru Banba as her maid.
- In Akuma no Riddle doujinshi Koakuma no Riddle, she has some cute romantic moments with Mahiru.