Promise

Eiro looked back at the Naiad queen with a soft smile on his face, waiting for her to answer to his request. He didn't know that there was a spirit gateway in such a place, but now that he did end up finding it in such a way, it was too great a chance to pass up.

"You already hold a gateway within your body. I don't think such a thing would be good for you. The gateway would fuse with your soul... Having multiple of those stuffed in there might cause some irreversible damages." The former naiad queen told Eiro with a somewhat worried expression, but the Demon simply shook his head, "I'm sure I can take something like that. My soul needs to be reshaped soon anyway, so I can ask my friend to make sure the gateways didn't damage it in a major way."