Fastening Days 4
FASTENING DAYS 4
We checked 8 streaming services in India on 04 Jun 2026 at 10:09 IST
About
Yoji, Kei, Kelly, and the bear-shaped robot Oscar save the town yet again using Fastening Machines! This time, they meet a kindhearted young boy named Samhen and his AI robot Jack. Shy Samhen, who transfers into Kei and Kelly's class, doesn't seem to like talking about himself much, but his chatty little buddy Jack is more than happy to help him communicate. One peaceful afternoon, the young heroes must protect the town from sudden and serious danger! Will they be able to save everyone? Pay attention to the bond between AI and humans, which the children take action to protect!
Cast
Fuyuka Ono
as Yoji (voice)
Ryoko Shiraishi
as Kei (voice)
Akemi Kanda
as Kelly (voice)
Sayuri Yahagi
as Samhen (voice)
Rie Kugimiya
as Jack (voice)
Ami Matsushima
as Samhen's mother (voice)
Hikaru Akao
as Girl 1 (voice)
Hana Sato
as Girl's mother (voice)
Yasunao Sakai
as Man 1 (voice)
Naoya Nakanishi
as Man 2 (voice)
Yuu Ayase
as Child (boy) (voice)
Saya Hirose
as Teacher (voice)
Seasons
Where does Fastening Days 4 rank today?
Fastening Days 4 is #5867 on the Bowood.TV Daily Streaming Charts today.
- Highest: #5867
- Top 10: 0 days
- Top 100: 0 days
Watch Fastening Days 4 Online Free — All Episodes in HD
Looking for a place to watch Fastening Days 4 online for free? You've landed on the right page. Fastening Days 4 is a popular Japanese animation series from 2019 that you can stream right now on Bowood.TV in high quality, no signup required.
About Fastening Days 4
Yoji, Kei, Kelly, and the bear-shaped robot Oscar save the town yet again using Fastening Machines! This time, they meet a kindhearted young boy named Samhen and his AI robot Jack. Shy Samhen, who transfers into Kei and Kelly's class, doesn't seem to like talking about himself much, but his chatty little buddy Jack is more than happy to help him communicate. One peaceful afternoon, the young heroes must protect the town from sudden and serious danger! Will they be able to save everyone? Pay attention to the bond between AI and humans, which the children take action to protect! Across 1 season and 3 episodes, originally airing on YouTube.
Fastening Days 4 Cast and Characters
The cast features Fuyuka Ono (as Yoji (voice)), Ryoko Shiraishi (as Kei (voice)), Akemi Kanda (as Kelly (voice)), Sayuri Yahagi (as Samhen (voice)), and Rie Kugimiya (as Jack (voice)). Their performances are a major reason Fastening Days 4 has built such a passionate audience.
Where to Watch Fastening Days 4 Online
Bowood.TV lets you stream Fastening Days 4 online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.
▶ Watch Fastening Days 4 NowWhy People Are Watching Fastening Days 4
Fastening Days 4 flies under the radar but it deserves your attention. What makes it work is a tone and style that's hard to find elsewhere. If you enjoy Japanese storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about Fastening Days 4
Where can I watch Fastening Days 4 online for free?
You can watch Fastening Days 4 online free on Bowood.TV. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does Fastening Days 4 have?
Fastening Days 4 has 3 episodes across 1 season. All episodes are available to stream right here on Bowood.TV.
Is Fastening Days 4 good? What's the rating?
Fastening Days 4 holds a 6.0/10 rating based on 2 reviews — a solid pick if the genre interests you.
Who is in the cast of Fastening Days 4?
The main cast includes Fuyuka Ono, Ryoko Shiraishi, Akemi Kanda, and Sayuri Yahagi, plus a strong supporting ensemble.
Is Fastening Days 4 available in Japanese?
Yes — Fastening Days 4 was originally produced in Japanese and that's the version you'll stream here on Bowood.TV. English subtitles are provided when available.
When was Fastening Days 4 released?
Fastening Days 4 first aired in 2019.
Do I need an account to watch Fastening Days 4 on Bowood.TV?
No. Bowood.TV is free and you can watch Fastening Days 4 without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Frequently Asked Questions
Where can I watch Fastening Days 4 for free?
You can watch Fastening Days 4 online for free on Bowood.TV. All 3 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does Fastening Days 4 have?
Fastening Days 4 currently has 1 season and a total of 3 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on Bowood.TV and continue watching from where you left off.
What is Fastening Days 4 about?
Yoji, Kei, Kelly, and the bear-shaped robot Oscar save the town yet again using Fastening Machines! This time, they meet a kindhearted young boy named Samhen and his AI robot Jack. Shy Samhen, who transfers into Kei and Kelly's class, doesn't seem to like talking about himself much, but his chatty little buddy Jack… It belongs to the Animation genre.
In which language is Fastening Days 4 originally available?
Fastening Days 4 was originally produced in JA. On Bowood.TV the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.
When was Fastening Days 4 first released?
Fastening Days 4 first premiered on December 5, 2019 (2019). The series has since concluded its run.
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