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!
Full Cast of Fastening Days 4
Hana Sato
Hana Sato (佐藤 はな, Satō Hana, born April 26, 1986) is a Japanese voice actress from Tokyo, Japan. She belongs to Acros...
Ryoko Shiraishi
Ryoko Shiraishi is a Japanese voice actress and singer. She was a member of the now disbanded idol unit Drops.
Rie Kugimiya
Rie Kugimiya is a Japanese singer and voice actress affiliated with I'm Enterprise. Some of Kugimiya's most prominen...
Akemi Kanda
Akemi Kanda was born on November 10, 1978 and is currently 46 years old.
Yuu Ayase
Yuu Ayase (綾瀬 有, Ayase Yū, October 3) is a Japanese voice actress affiliated with I'm Enterprise. She was born in Miy...
Sayuri Yahagi
Sayuri Yahagi (矢作 紗友里, Yahagi Sayuri, born September 22, 1986) is a Japanese voice actress affiliated with I'm Enterp...
Crew of Fastening Days 4
Discover the backstage crew of Fastening Days 4 →- Released on December 05, 2019