Sumi Washio is a Hero is basically the prequel of the first season. Yes, we see Sumi (who is actually Togo Mimori by the way), Gin, and Nogi Sonoko (the bandaged girl from the 8th episode).
Obviously, Sumi and her team had a harder time compared to the first season. Also interesting to see the training montage.
Episode 3 is basically a comedic episode where Sumi and Sonoko play dressup on Gin. Also, Sumi is forced to wear a fancy dress as well. They are pretty much on school break.
Also, there is a pool scene and of course, the open house presentation that Sonoko, Gin, and Sumi put on, which was halarious.
#yuukiyuuna