After a thorough conversation with my wives about the first loop, I came to a realization.
In fact, the most incomplete memory is mine.

Once this was revealed, the conversation shifted towards finding a way to restore my memory.

"Then, Yujin probably has some kind of seal on him too."
"We regained our memories by kissing our disciple, so it’s likely something similar."
"That makes sense…"

I, too, had one.
A seal that could only be broken by kissing my three wives.
A seal that implanted something like '???' inside me and evolved me into …