Sagatsu Later ends Up Transcending all the Realms after obsorbing the Power of Unikixi and Could overcome any possibility and probability.
"Woah I knew I was gonna get strong But this strong, I could literally wipe out all the 9 realms with a breathe of my Power. I don't even need to worry about being weak."
Sagatsu Then decides to Manipulate the Past and Present in one of his timeline so he could see how the ability works. Sagatsu being able to use any ability he thinks of makes him stronger than ever having boundless Powers. There's no Limits to what he can do.
Sagatsu Then changes the Laws Of Nature so that Plants can grow 5x faster in every Reality. He Manipulated the Principal of The concept of Life so people could relive their lives after death.
With Power That absolutely Controls Laws of Physics and Everything else known and unknown Sagatsu kept gaining more and More abilities. As he lives outside of Everything He transcends everything and everyone. No one can challenge him as he is.
As He kept getting stronger He becomes a Absolute Perfect Being that Nothing comes close to his Powers. Being able to control others imagination he is a True Being that exist in every single aspect of Reality, Future, Past, Present, Realms, everything known Sagatsu Now exist as everything itself. He embodies anything known.