We still have very little information about things. I think, from my point of view, that han naru is just what they call "reincarnation" ( we are not sure yet ) Han Naru will be reborn in exactly the same way regardless of how many years pass or who his father is involved with, but like i said, these are just theories at the moment. I also have many questions about his father's intentions, why he did everything he did, but all that's left is to wait.
Pretty sure there has to be some type of reincarnation, and the modern father figured out his memories a little after the modern han Maru was born, which is why he's so off putting in han Marus memories
I know the theory that is his father however, in this context it doesn’t quite make sense to me (how old is Han Maru? and wouldn’t he not be born during the time period of the immortal rakusha memories, let alone be a child that seems to be 5-7? I do believe he is possibly his father but the time periods don’t seem to add up) side note I love the immortal Rakusha Charecter design the fact that his tattoos (marks if not tattoos) are his weapons