Sumida Aiko

On June 26, 2022, Aiko became a member of the J-pop girl group SPL∞ASH. In December 2023, Aiko appeared as a contestant in the Japanese trot survival show Trot Girls Japan. She eventually was one of the nine finalists representing Japan thus giving her a chance to advance to the follow-up survival show Korea VS Japan Trot as a part of Team Japan.

On June 7, 2024, it was announced that Aiko along with Kim Dahyun will form the Korean-Japanese trot duo Lucky PangPang and will make their debut soon. On June 29, 2024, Lucky PangPang officially debuted with the digital single "Damdadi". On November 16, 2024, Aiko graduated from SPL∞ASH.