# Chiikawa: Ningyo no Shima no Himitsu
*Also known as: 映画ちいかわ 人魚の島のひみつ*

## Facts
- Format: MOVIE
- Status: in production
- Year: 2026
- Season: SUMMER

## Renewal Score
**Chiikawa: Ningyo no Shima no Himitsu** has a **43% renewal probability** on Courcast (confidence: 91%) as of 2026-06-03.

## Synopsis
Based on a series of Chiikawa comics posted on X by Nagano from March to November 2023, known as the "Siren Arc".
One day, while Chiikawa and Hachiware were relaxing in the square, Usagi suddenly appeared with a flyer stuck to its face. When Hachiware checked the flyer, it was an invitation reading “Special Invitation to a Special Island.”
Lured by promises like “Get 100x rewards for simple island quests!” and “Limited-edition island ramen, exclusive sweets—sweet and spicy treats all practically

## About Courcast
Courcast forecasts anime renewal probability using daily signals from streaming platforms, fan communities, and industry sources. Each CourScore (0–100) reflects fandom momentum, streaming performance, source material runway, and franchise history.

- Full details: https://courcast.com/title/chiikawa-ningyo-no-shima-no-himitsu-summer-2026
- API: https://courcast.com/api/public/titles/chiikawa-ningyo-no-shima-no-himitsu-summer-2026
- About Courcast: https://courcast.com/about

*Last updated: 2026-06-03*