A Maiden's Serenade

The Mermaid Festival is a visual novel set in the coastal town of Suminoe, where protagonist Takumi works at his family's cafe. During the annual Mermaid Festival, he encounters a mysterious girl with a beautiful voice and rescues her after she falls into the sea. He invites her home to dry off, and she introduces herself as Shione Katagai. His mother welcomes Shione to stay with them, and shortly after, another girl named Matsuri transfers to Takumi's school. The game follows these interconnected relationships across multiple character routes as Takumi's daily life transforms. Features full Japanese voice acting and player choice-driven narrative with multiple endings.