Imy (アイミー) will disband on December 21st.

As of this writing, the band has not shown that they have have a final live on that date.

Below are the translated announcement and a message by sia in regards of their decision to disband.

Thank you for your support of Imy (アイミー).
As of December 21, 2021, Imy will be dissolved.
We would like to express our deepest apologies to all of our fans and everyone involved.

Thank you very much for your support.
My name is sia, and I am in charge of the vocals, management, lyrics.
I would like to express my sincere apologies for making such a selfish decision, and for not holding an event to say goodbye to you in this way. I would like to express my deepest apologies for everything.
The reason is as stated at the beginning.
"I, sia, was running everything."
My lack of power, mental instability, and poor communication skills were the result. Imy was mainly unstable.
It was all my fault. I'm really sorry.
I'll do my best for the remaining gigs that are currently scheduled.
I have not decided anything about my future activities yet.
Imy (アイミー) sia