This description might be related to an anime or manga, but he had forgotten the specific name. In this work, there might be two characters fighting with guns in a warehouse or other places. This kind of scene was usually a description of a battle. It depicted a gunfight between two people to show the tension between them and the intense battle process. In this scenario, the identities and backgrounds of the two people might not be important. Their actions and decisions might be more eye-catching. This way of writing could also make the readers feel nervous and excited, so that they could better enjoy the fun brought by the work.