Aoi was a part of Ayabie till the 4 members (Yumehito, Takehito, Intetsu, and Kenzo) left ayabie.
The reason of Yumehito, Kenzo, Takehito and Intetsu leaving wasn’t a fight or a dissagreement. They had an interview about this. The band, including Aoi, had thought of leaving the management since January – February this year (2010). When they came together to discuss this decision again in March, Aoi said that he would not oppose the other four leaving the management, and that he was perfectly fine with them continuing on as Ayabie without him, but he would be staying on in Tokuma. His reason for this was that he thought that even though things might not have turned out as they had expected, he still felt indebted to the staff and all the people who had worked hard for the sake of the band.