There are a few ways to fuse Sarasvati with Agilao that Persona 3 Reload players can use in the Episode Aigis: The Answer DLC. One of the early requests available with Elizabeth is the Velvet Room Door in the Abyss of Time; these little missions can be completed in exchange for various rewards. Those based on bringing her Personas with certain skills require experimenting with the fusion system, similar to the base game.