Series

Fastening Days 4

★ 6.0(2)20193m1 season

Fastening Days 4 isn't available to stream, rent or buy in Mexico right now. Availability changes often, so check back soon. Availability checked 10 June 2026.

Where to watch Fastening Days 4

🇲🇽 Mexico

No streaming, rental or purchase options are listed in Mexico right now. Availability changes often — try switching your region in the header.

Good to know

Release date: 2019-12-05
Runtime: 3m
Language: Japanese
Seasons: 1
Episodes: 3
Network: YouTube
Status: Ended
Country: Japan
Studio: Studio Colorido

About Fastening Days 4

Fastening Days 4 is a 2019 web series in the Animation genre, starring Fuyuka Ono, Ryoko Shiraishi and Akemi Kanda. It spans 1 season and 3 episodes, and originally aired on YouTube. It holds an average rating of 6.0/10 from 2 viewers. Below you can see where to watch Fastening Days 4 in Mexico — across streaming, rental and purchase options — along with the full cast, trailer and viewer reviews.

Synopsis

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!

Seasons (1)

Season 13 eps · 2019

Cast

Fuyuka Ono

Yoji (voice)

Ryoko Shiraishi

Kei (voice)

Akemi Kanda

Kelly (voice)

Sayuri Yahagi

Samhen (voice)

Rie Kugimiya

Jack (voice)

Ami Matsushima

Samhen's mother (voice)

Hikaru Akao

Girl 1 (voice)

Hana Sato

Girl's mother (voice)

Yasunao Sakai

Man 1 (voice)

Naoya Nakanishi

Man 2 (voice)

Yuu Ayase

Child (boy) (voice)

Saya Hirose

Teacher (voice)

Frequently asked questions

Where can I watch Fastening Days 4 in Mexico?+

Fastening Days 4 is not currently listed on any streaming, rental or purchase service in Mexico. Availability changes often, so check back or switch your region.

Is Fastening Days 4 on Netflix?+

Fastening Days 4 is not on Netflix in Mexico right now.

How many seasons of Fastening Days 4 are there?+

Fastening Days 4 has 1 season and 3 episodes in total.

Who stars in Fastening Days 4?+

Fastening Days 4 stars Fuyuka Ono, Ryoko Shiraishi, Akemi Kanda, Sayuri Yahagi and Rie Kugimiya.

When did Fastening Days 4 come out?+

Fastening Days 4 is a 2019 web series.

What genre is Fastening Days 4?+

Fastening Days 4 is Animation series.