This doorway to other SEKAI lets the game's characters visit you, and allows you to visit other players' MYSEKAI.

Each of the game's groups (other than VIRTUAL SINGER) has its own Gate. Every day at 5 AM and 5 PM (PT), 2 - 5 characters from the group whose Gate is set will visit.
When you place a furniture item that has a 4-person reaction you have never viewed before, those 4 characters will appear in the next visit.

Each group's Gate has levels. Leveling it up increases the chance of more visitors coming at once.
It also provides a Gate Bonus for its group's Talent, which increases with each new level.

Be aware that you can only change your Gate once every 24 hours.

*VIRTUAL SINGERS with subgroups will receive a Talent bonus from their group's Gate.
*VIRTUAL SINGERS with no subgroup will receive a Talent bonus from the Gate with the highest level.