Before she was a primetime actress, Momota was the beating heart of the revival era (2016–2019). Unlike the polished, never-say-die aesthetic of standard J-pop, BiS was notorious for its "alternative" or "punk" idol ethos. Momota didn’t just sing; she bled into the microphones.

The enigmatic case of Emiri Momota and Mizukawa Sumire serves as a captivating example of the intricacies of the entertainment industry, where identity, persona, and creative expression are constantly evolving.