One of them has to be Irene that's a fact
The Holtin parents?
Maybe its the relics hahahaha
Oh...I haven't thought of that possibility.
My guess is actually Irene, Jaeha, Sasaki Yuka (obviously) and, if we count in relics, the rope.
And the rope
Ohhhh yeah that possible since relics can transform to people if the have a high grade and since they can upgrade we’ll be seeing a human rope... bdsm?!?!
Sooo...who were his first 4 fans? (⊙.⊙ )