After beating Genichiro, start in the dungeon and head to the illusion of Senhoji Temple.
Defeat the three monkeys.
Arrive at the main hall and get the Immortal Slash.
Then return to the dungeon, defeat the Seven-faced Samurai, and go to the bottom of Ashina (you can also reach it in the water storage city area by defeating the solitary shadows in the first pit).
Defeat Snake-Eye Baiqiu at the bottom of Ashina, then go up from the cave behind it to reach the Secret Forest.
Go all the way to the secret forest, ignore the ghosts and the headless, and defeat the fog shadow noble in the house to lead to the aquatic village.
At the end of the aquatic village (you can escape the aquatic Rinbu), you fight the phantom monk.
Obtain the red flower stone "Stone of Knot".
Then go to the Valley of the Fallen, defeat the lion ape at the drinking water of the lion ape (if you fight it in advance, you will have to fight the lion ape again on the way to the aquatic village, which will be very uncomfortable), and get the white flower "Fragrant Water Lotus".
When you return to the main city at this time, the first invasion of the inner palace will occur. Carefully go to the platform where Genichiro was beaten before but don't go up yet. Find the Buddha statue in the Samurai Hall below because there is a final boss battle here.
Talk to the adoptive father on the platform, choose the option of abandoning the prince, defeat Yongzhen and Lao Yixin, and then you can enter the Shura ending.
But here I want to ask everyone, are you really willing to kill Miss Yongzhen to complete this ending?
The above is the complete guide to clearing the ending of Sekiro Shura. I hope it can help everyone!