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She officially joined the group Non-Fiction on June 12, 2025. She is also a member of the combined idol collective HEROINES , which features several prominent underground and "chika" idol units.
A guide to the idol collective and its member units shiori niina
💡 Due to the phonetic similarity of many Japanese names, Shiori Niina is often confused with other performers. She is distinct from: She officially joined the group Non-Fiction on June 12, 2025
Known for her presence as a "new generation" talent within the HEROINES ecosystem, she contributes to the high-energy, performance-heavy style typical of Non-Fiction's discography. she contributes to the high-energy