Seino Sayumi

 (星乃さゆみ) is a founding member of AIBECK and a former member of Otome Rouman.

She joined Otome Rouman in August 2016 and graduated on February 26, 2017.

Profile

 * Likes: Yu-Gi-Oh!, Queen, cute things
 * Interests: Karaoke, watching Let's Plays
 * Skills: Rubik's cube
 * Goals: One-man at Budokan!!!

Albums

 * IDOL COUNTER ATTACK

Singles

 * Wake Up
 * FLASH BACK
 * CHEKILLER
 * SUPER NOVA
 * HELLO
 * AISola

Digital Singles

 * STAY GOLD
 * Show Case
 * AISola
 * Kimisorairo
 * Anthem
 * OSE!!
 * CHEKILLER
 * NEXT STEP
 * HELLO
 * Super Nova
 * Hallelujah
 * FLASH BACK
 * Wake up
 * LAKE MAD GO
 * PERFECT VISION
 * ITO
 * STEPPER
 * Airenshoku
 * OLEOLEO
 * WANTED
 * Hi-HO

Trivia

 * Her fans are called Sayumists (さゆみすと).