# FASTENING DAYS
*Also known as: FASTENING DAYS*

## Facts
- Format: ONA
- Status: concluded
- Year: 2014
- Season: FALL

## Renewal Score
**FASTENING DAYS** has a **35% renewal probability** on Courcast (confidence: 73%) as of 2026-06-04.

## Synopsis
Youji and Kei, a boy and girl, live in a town in the not-so-distant future with their foster parent, Anna. But these seemingly ordinary children have a
secret hidden even from their unsuspecting mother: Youji and Kei are superhero defenders of their town!
With a flap of their capes, the two of them and their robot bear sidekick, Oscar, protect the citizens in their town with their handmade high-tech machinery.
But from what menace?
And will our little heroes be able to overcome the crisis about 

## 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/fastening-days-fall-2014
- API: https://courcast.com/api/public/titles/fastening-days-fall-2014
- About Courcast: https://courcast.com/about

*Last updated: 2026-06-04*