Sakuya Otonashi is the is the female main protagonist in the story/fanfic, Future Card Buddyfight: DREAMERS, the world she is fighting for and the deck she is using is still all remain unknown, nobody ever see her buddyfight expect for Izayoi, she is different the her little brother, she is always nice person that always have a smile on her face, she always done things flawlessly, but...she have a hidden thing that hide away form other then izayoi.
Saku (さく、咲）means blossom, Flowering, Ya'(や、夜）means night and Otonashi(音無、おとなし）means 'Soundless' Or 'No Sound', she have the same first name as her little brother:Izayoi Otonashi Her Name means: 'Soundless Blossom Night'
Sakuya Have Dark blue eyes, silver hair, has a long braid on each side of her face with green bows at the ends, she carries many knives and house work things with her. Wears a French maid's outfit with short sleeves, and a white maid headband on her head, she have a watch that use the Roman numerals for 1 through 12 line.
She is a perfect and a nice girl, she does everything flawlessly and always nice to each other, but she is extremely nice to izayoi then other people, she have finish high school and university very quickly, which that makes her a genius at almost everything. she is the opposite of Izayoi, she takes a lot of things seriously, don't want to solve everything by force.
Seeing Izayoi have escape school as she expected, she have decide to bring the letter that she have received form an unknown mask man and give it to Izayoi， because she is worried about Izaoyi creating too much chaos, he have decided to tag long with Izayoi's little journey of his.