If Sekiro takes place in a single day...

That means he's an INSANE character when it comes to adapt against any kind of situation ? Also, are we really ignoring how he mastered, from HIS MIND ONLY, a secret skill from Tomoe (sakura dance), which is supposed to take more than a whole life to master, which Genishiro never really mastered except in Sekiro's mind, in a SINGLE. DAY.

He's way crazier than i thought, my guy can parry a god's sword above the clouds, perfectly use a prosthetic the moment he gets it, deflect one mind which is so fast that it almost disappears to the eye, the list goes on...

Or am i wrong ? Feel free to enlighten me !