The Gateway is a building which is automatically added to players' islands at the start of the game. It allows players to teleport directly to various areas (Cairos Dungeon, Trial of Ascension, World Boss, Rift Raid, Rift Dungeon) of the game and recharge energy, although players do not necessarily have to perform these functions at the gateway itself.
In order to use the teleport function of the Gateway, Cairos Dungeon must be unlocked.
Only teleportation to Cairos Dungeon will be available, until you complete the prerequisite event corresponding to each area.