Is Iron Grandma coming back?

Name: Iron Grandma
Genre: Comedy, Action, Espionage
Released: 2015-01-10

Iron Grandma (2015–2018) — comedy · action · espionage on NHK BS Premium

The answer: Concluded July 8, 2018.

Genre: Comedy · Action · Espionage
Network / streamer: NHK BS Premium
Premiered: January 10, 2015
Ended: July 8, 2018
Runtime: ~49 min per episode

About Iron Grandma

20 years ago, Reiko Shiotani and Naomi Sato were spies named Salt and Sugar. They carried out secret intelligence investigations. Now retired, they meet once again.