In a perfect world of love and good dev, Nameless could add them through the dead serial code function from the office but... meh. Keep dreaming.
It's the same thing for Agave.
Actually, they could be great girls for serial code. They are almost as weak as event girls. We already got a Chocolate Cosmos serial code and she is a gacha 5*. event-like girls can't really be in gacha and they don't have their own event. So, that forgotten this is their chance. But... Nameless. Too bad, no disconuts for them.