For a time she was a part of the Osaka based performing arts dance group, N-Trance Fish. She took part in their 14th Exhibition, titled ‘DRAWING’ on September 22, 2011 and subsequently their 15th Exhibition, titled ‘dice’ on October 20, 2012.
はしっこのすみっ子 / Hashikkono Sumikko
She was also a part of the duo dance group はしっこのすみっ子 alongside her friend Matsushita Minako, who she had worked on many projects together with before hand. The group formed on May 10, 2012 and held their final performance on March 31, 2013. In early 2017, Minako paid Aina a visit at one of BiSH’s live shows in their hometown of Osaka. The picture of this can be seen on her Instagram.
(Backing Dancer For) YURI.ame / 甘い飴
On July 16, 2012, she was a backing dancer for YURI.ame / 甘い飴 at Legend Tokyo Chapter.2西日本予選大会
On July 20, 2012, a video was posted to YouTube titled, ‘r▲mrd‘, which sees Aina introduce the group and perform a dance routine with some other girls, including her friend Minako.
POP ICON PROJECT TOKYO Audition [x]
In late 2013, Aina auditioned for ‘POP ICON PROJECT TOKYO’, an audition run by Italian/Japanese fashion designer, Nicola Formichetti, who is most known for his work at Disel and for Lady Gaga. She ranked highly, but overall wasn’t successful.
Solo work / ITSUKI&AINA
During 2013, Aina performed as a solo artist, singing and dancing. She even had some of her old friends perform as backing dancers for her. This continued onto and through 2014, where she uploaded videos to her YouTube channel. This channel also featured videos by ‘ITSUKI&AINA’, a duo group between Aina and Itsuki. The duo ceased activites March 12, 2015.
(Backing Dancer For) yucat & PARALLEL [x]
While working as a solo singer and dancer, she worked as a backing dancer for the solo artist ‘yucat’, who was signed to Tsubasa Records (the same company as Pour Lui & the original BiS). Aina, along with some of the other backing dancers, then went on to form the idol unit, PARALLEL, in 2014. Her graduation from PARALLEL was announced on January 20, 2015, with her final performance being March 7, 2015.
WACK (BiSH / Solo single / BULLY IDOL)
She joined BiSH as a founding member in March 2015. Since the group’s debut, she’s been in charge of the group’s choreography. [x] In 2017, Watanabe paid her for her choreography work that she had done for the group up to that point. [x] She has also done some choreography for EMPiRE.
Following the WACK 2018 New Year’s live broadcast, it was revealed that she received the second most fan votes and would be getting her own solo debut. She rerecorded her pre-BiSH solo song, Kienaide, including an updated music video.
On January 30, 2019, after appearing at the end of BILLIE IDLE’s MV for そして、また、、 Aina was revealed to be a member of the “rival” group, BULLY IDOL. Their version of the music video was released a week later on February 6, 2019.
The duo was formed for the ‘hide TRIBUTE IMPULSE’ album, where they featured on track 6, covering the song ‘BACTERIA’. The album was released June 6, 2018.
The duo is made up of Aina and UK, from the rap duo MOROHA. In early 2019, a full half year after the release, a tabloid put out a scoop about Aina and UK being in a supposed relationship, after they were seen together taking a taxi back to her house. I have translated the tabloid article here.