Zoostuck 3

unwittingly have sex with your great-grandmother, therefore ensuring your own existence with an ouroburos that, if broken, would destroy the universe in a time paradox

There are only a few problems with that plan.

First of all, ewwwwwwwwwwwwwwwwwwwwwwwwww.

Second, by definition you can't make a plan to unwittingly do something, how would that even work.

Third, you already made it a law of the universe that you couldn't be killed and then this cheating jerk killed you anyways. You sure as hell aren't going to try to secure your existence through something as unreliable as temporal paradoxes.

Fourth, you weren't actually "born" in this universe. You brought into being, so you entered it already fully formed at the time of its creation. Technically speaking, you don't have a great-grandmother.

There are women who correspond to the women who were your great-grandmothers in the previous universe, but if you attempted to initiate a progenitor paradox - which, as you have already noted, would be totally gross - it would probably just produce a counterpart to you in this universe, and for all you know they'd gain all your powers and then destroy you.

Basically, no matter how you look at it, it's a terrible idea.

However, it did make you realize something. You're immortal and have existed since the dawn of time in this universe. That means that your past self should still be in the universe during this time period. You could find him and teach him anti-spinjitsu so he can defend himself against the unconscious guy who's right here who you haven't killed yet for some reason.

But the problem is that you have no idea where you were or what you were doing in the early 19th century. (It's the 19th century because it starts with 19 and you found that way easier to remember.) So how are you going to find yourself?