# Spiral: Suiri no Kizuna
*Also known as: Spiral: Bond of Reasoning / スパイラル -推理の絆-*

## Facts
- Format: TV
- Status: concluded
- Year: 2002
- Season: FALL

## Renewal Score
**Spiral: Suiri no Kizuna** has a **44% renewal probability** on Courcast (confidence: 77%) as of 2026-06-03.

## Synopsis
Ayumu Narumi's older brother Kiyotaka, a renowned detective and piano player, disappears all of a sudden. The only clue Narumi has, are the Blade Children. Two years later a row of murders and incidents begin, relating to the Blade Children. Together with school journalist, Hiyono Yuizaki, Narumi tries to figure out their destiny.
(Source: Anime News Network)

## 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/spiral-suiri-no-kizuna-fall-2002
- API: https://courcast.com/api/public/titles/spiral-suiri-no-kizuna-fall-2002
- About Courcast: https://courcast.com/about

*Last updated: 2026-06-03*