Green Mart

Green Mart is a convenience store that is located in Academy City. It sells a variety of items like food stuffs, beverages and magazines. It is notable as one of the targets of the graviton bombings.

Level Upper Incidents
The store first appears in episode 4 of the Toaru Kagaku no Railgun anime, Misaka Mikoto is seen reading a magazine off the rack and later contemplates about the urban legends concerning around a person who can negate other people's abilities. Mikoto then meets Kamijou Touma just outside the store.

In both the anime and manga, it becomes a target for Kaitabi Hatsuya, the graviton bomber. Here, Judgment members detected an acceleration of gravitons as a sign of an impending graviton explosion, a bomb was hidden in a doll and exploded which severely injures a member of Judgment after protecting a girl from an explosion.