A Maiden's Serenade

The Mermaid Festival is an annual festival that takes place in the coastal town of Suminoe and on the night of the festival, Takumi meets a girl with a beautiful singing voice. From this chance encounter, Takumi's daily life slowly begins to change. The 7th project by developer, feng.

At a glance

• Platform: Windows.
• Genres: Adventure, Casual.
• Release date: Dec 18, 2025.
• Steam user reviews: Positive (100% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

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