MMR-422 MMR-422 Sweet Heart/夏江美優 Released 2014-09-26. Release date 2014-09-26 Updated 2026-08-26 22:07 Performers Our records list no performers for this title. MMR-421 MMR-423 Related entries MMR 2014 Record & updates First seen 2026-08-25 Last verified 2026-10-19 Public content updated 2026-08-26 22:07 Request correction or removal Report a data issue