Timespace Junction

The Timespace Junction is a mysterious land used by the Seven Catastrophes as their hideout.

Background
The Timespace Junction is a particular point on space connecting every single world within space and time. On this area, the rules of the world doesn't apply and the space-time fabric can be easily distorted, causing summoning spells to have a way highter sucess rate and making possible to someone create a dimension using their own memories.

Plot
After sucessfully stealing the research data from the Black Magic Hall, Lilia and Valenti discovers an unique point on space that would allow them to summon any being they desire. The two are able to install themselves, along with Eastin and Mono, in the area and Lilia proposes to invite the Seven Deadly Sins in order to know more about their weaknesses and use them to summon new allies capable to explore them. While Valenti, Eastin and Mono, install themselves on their own realms projected by their memories, Lilia stay behind to deal with the Sins on her Awakened form.

The area remained being used by the group as their home and training camp after Roxy, Shin and Camila's arrival until it was abandoned after Eastin and Roxy's constant fights began affecting Valenti's experiments.