Dark Beauty Reina Extra Story ~The Island of Mermaid and the Fortress' Saintess~

Reina is a student in Fylselia Magic Academy. - While she sails back to her hometown for a vacation, the ship is wrongly directed by singing voices of mermaids and eventually drifts onto Maidy Island. - A mystery in the island's history and the fortress city's saintess, Estilla... - Reina is destined to know the truth of the mermaids' song.​