AiNA THE END is a Japanese singer and songwriter known for her work as the lead vocalist of the alternative idol group BiSH and for her solo activities. Emerging from Japan's contemporary pop and alternative scenes in the 2010s, she is associated with genres that blend J-pop, rock, electronic, and experimental pop, often characterized by gritty, emotive vocal delivery and theatrical performance. Her music and artistic approach frequently juxtapose polished pop production with raw, expressive vocals and dark or introspective lyrical themes, reflecting a crossover between idol culture and alternative music. Active from the mid-2010s onward, she has collaborated with other artists across genres and pursued both group and solo releases.