things to do before devine dragon

[icon_of_sin]

I have done everything on this page for the purification and return endings except for the choice at the last boss and defeating the second owl boss

https://sekiroshadowsdietwice.wiki.fextralife.com/Endings

and i have done as much of everything on this page as i can
https://www.gamecrate.com/sekiro-shadows-die-twice-how-start-and-complete-all-npc-side-quests/22703

Is there anything else that i will be locked out of after fighting the divine dragon or am i good to go?