Sayu Sincronisity

While Sayu usually comes off as energetic and sassy during her streams, she is also a kind girl who cares deeply about her friends and fans. She has a passion for music, anime, relaxing games and gacha, most notably Genshin Impact.

She has medium length light blue hair with robotic animal 'ears' and large ahoge with a light blue and brown eye. Her outer jacket is mainly black with a yellow collar and white/light blue details. The left half of her body consists of android parts, while her right organic half is covered in light blue tattoos.

On 21 December, Sayu Sincronisity made her official re-debut with her full and finished 2D model drawn by Yuniiho and rigged by Oykeli.

* In Sayu's final community name vote, the name for her fans was chosen to be "Sincroknights."
* Collectively, the fanbase is called the "Sindicate."

* Notable units and groups Sayu is part of:
* "Aizakaya," along with Amaiami, Emucchi, Tane Tenshi, and Yozora Aoi.
* "PRIMORDIɅ," alongside Rita Kamishiro and Sagisawa Ria.

* Sayu Okami was a small-time entertainer before she accepted a corporate offer to undergo surgery and become an android idol. During her debut, she stumbled and fell on stage before a large audience, drawing the ire of her new employer. As Sayu's idol career continued, her company repeatedly ordered her to undergo surgery and improve her parts, likely to make her into a 'perfect' idol. Eventually, the pressure from constant surgery and having to live up to the company's crushing expectations caught up to Sayu, causing her to collapse on stage during her half-year anniversary. When she came to, she had been abandoned by the company and left to fend for herself. Tearfully, she reached out to her old friends, who had been searching for her after she left for her idol career. With the help of her friends, Sayu got back on her feet and reassembled herself into an android by the name of Sayu Sincronisity.
* Kson makes a cameo as one of Sayu Sincronisity's friends.
* She is half human and half android, but she jokingly calls her species "donkey" because of her long robot ears.

* Her favorite music artists are: Aimer, FictionJunction, Akiko Shikata, and Sakamoto Maya.
* She likes: udon, mushrooms, sweets, Summer, treasure, and everything?
* She likes Genshin Impact, both the lore and playing the game itself. Her favorite male character is Xiao and her favorite female character is The Raiden Shogun.
* Sayu loves surprises.
* Sayu’s favorite chocolate brand is Sees Candies.
* She dislikes: thinking/numbers, beansprouts, the color red, the Internet, repetitive noises, losing things.

* Her goals are: be cool, be in a gacha game, voice act a character, 3D concert, 100k subs on YouTube.
* Sayu was born in Japan but raised in northern California.
* She is fluent in English and Japanese, and can even write in kanji. She is ethnically Japanese, but her parents don't speak the language, so she took it upon herself to learn it. She has passed the JLPT N2 and helped kids and adults learn English while she lived in Japan.
* Her hobbies are watching anime/J-Dramas, voice acting and singing.
* When she was young, her dream job was wizard.
* She performed two duets during Raechit's 2025 Valentines Day concert

A half kitsune, half ookami girl who calls herself the shrine goddess of the Toyofuku Shrine, located on the secluded plane "Ame-no-Enman". She was abandoned on the shrine grounds, and is constantly on the search for information on her birthparents with the goal of someday meeting them. She eventually finds out that her father was a kitsune, and her mother was an ookami.

She has no known powers or abilities, yet constantly tries to grant the wishes of those who visit her shrine as it "gives her life meaning" when people spend time with her. She constantly attempts to give others happiness despite her lack of godly power.