Northbridge is a location in the Hero series. It is where majority of the events takes place in Hero, Vol. 1. In Vol. 1, Chapter 15, there was a battle between the heroes and villains which causes a destruction in the city leaving Northbridge in ruins.
Northbridge is sometimes mentioned in The Freshman and The Sophomore series. Sometimes the MC and her friends go to Northbridge if there is an event. Hartfeld University is somewhat close by to the city. Northbridge is also one of the locations in The Freshmen and The Sophomore series.