Sumeragi Building 13 is part of the first round of boss missions from Gunvolt Chronicles: Luminous Avenger iX, alongside Store Ruins and Auto-fab Plant. Described as "the largest Sumeragi property in the world", Copen infiltrates this building in order to find information on the Butterfly Effect. Due to the intense security surrounding it, Jin proposes a plan to hop aboard a cargo train and sneak in that way.
- The first half of the stage takes place on a moving train. While this is nothing new by Gunvolt standards, there is a midboss at the end of the train.
- The second half of the stage will feature odd jumping physics due to Stella's Gravity septima. Expect floaty jumps and the hazards associated with such.
|Up in the air between two cargo containers.|
|Hidden inside a container. Look for the side that looks damaged.|
|Use Anchor Nexus to fly straight up to the robot, or use Rising Cyclone to give you a boost up. Be careful.|
|Proceed past the stairs after the open area.|
- A doll of Lumen is floating at the wide area near the start point of the second half.
- A photo or magazine with Isola on it can be seen floating in a hallway near the end of the stage.