Ikuo receives a suspicious order from a client demanding him to manufacture ten guns in two months. After trial and error, the weapons are completed. But the client postpones the payment and orders 40 more.
Unfortunately the movie The Big Gun is not yet available on HBO Max.
| Production | Koji Segawa | Executive Producer |
| Writing | Hajime Ohata | Writer |
| Production | Ai Nagura | Executive Producer |
| Directing | Hajime Ohata | Director |
| Production | Yûji Mishima | Executive Producer |
