- Sun Mar 31, 2019 12:30 am
#16107456
These are cross-posted comments on a wiki page. You can visit the page here. Read Wiki Page
- Sun Sep 27, 2020 10:33 pm
#16260633
Why would you want to use it? What would it do, side from Mortal Draw being black instead of red?
- Sun Mar 31, 2019 10:20 am
#16107674
Maybe no one discovered it or maybe its super hard to meet requirements, or its just gonna be a dlc item, who knows.
- Fri Apr 05, 2019 9:38 pm
#16110124
I'm gonna copy what I just posted in the Isshin Ashina page's comments:
If you Eavesdrop on Isshin Ashina by hugging the wall outside his doorway, you can listen to him say, "The crimson Mortal Blade...That means the one he has must be...black, then. To abandon oneself in search of strength...How tragic..."
I don't know what requirements must be met to trigger this, but I'm fairly certain you have to have at least gotten the Mortal Blade from the Divine Child of Rejuvenation. After getting it, talking to Isshin Ashina will have Wolf explain that when he drew and looked upon the crimson blade, he died, once.
So... As you just told him your blade is crimson, and he says "the one he has is black, then" implies that... there is more than one Mortal Blade? Perhaps this is mentioned/explained at some point later in the game, as I've only completed Mibu and Senpou Temple, and am just about to kill the Guardian Ape.
So, based of this page containing no additional info, I'm assuming the Black Mortal Blade really is a thing! As others have mentioned, perhaps it is already present in the game and is hard to get or will be dlc. (Edited format for easier reading, as well as additional comments after seeing this page doesn't contain additional information on the Black Mortal Blade) -DK
If you Eavesdrop on Isshin Ashina by hugging the wall outside his doorway, you can listen to him say, "The crimson Mortal Blade...That means the one he has must be...black, then. To abandon oneself in search of strength...How tragic..."
I don't know what requirements must be met to trigger this, but I'm fairly certain you have to have at least gotten the Mortal Blade from the Divine Child of Rejuvenation. After getting it, talking to Isshin Ashina will have Wolf explain that when he drew and looked upon the crimson blade, he died, once.
So... As you just told him your blade is crimson, and he says "the one he has is black, then" implies that... there is more than one Mortal Blade? Perhaps this is mentioned/explained at some point later in the game, as I've only completed Mibu and Senpou Temple, and am just about to kill the Guardian Ape.
So, based of this page containing no additional info, I'm assuming the Black Mortal Blade really is a thing! As others have mentioned, perhaps it is already present in the game and is hard to get or will be dlc. (Edited format for easier reading, as well as additional comments after seeing this page doesn't contain additional information on the Black Mortal Blade) -DK
- Fri Apr 05, 2019 9:39 pm
#16110126
Ugh.. well... First time posting so I didn't know that the format would clump everything together... so... nix the format for easier reading comment. 

- Sat Apr 06, 2019 4:20 am
#16110212
Isn't it the weapon Genichiro uses during the second way of tomoe fight (immortal severance final boss phase 1)? He starts the fight with a black mortal draw
- Sat Apr 06, 2019 2:14 pm
#16110383
Yes it is, and if you do the Shura ending you pick it off of Owl’s corpse
- Mon Apr 08, 2019 1:32 pm
#16111097
Unlike the red one, this one has the ability to transfer the immortality from one to another.
- Fri Apr 12, 2019 7:02 am
#16112453
no it does not, what it does instead is opening the gateway to the underworld, that is why Isshin was able to not only revive, but appear as himself in his prime
- Thu May 02, 2019 12:58 pm
#16118588
that is why it says transferring, it's technically getting rid of Tennis immortality and gives it to Isshin
- Fri Oct 25, 2019 8:51 am
#16157804
The Black blade could be wielded by anyone, thats why Owl could hold it. If it did transfer immortality then we could've fought Owl again after we stabbed him as the 3rd boss in a row during the Shura ending.
- Tue Apr 23, 2019 11:27 pm
#16116150
I think that's because Owl killed Genichiro while you fought Isshin and Emma.
- Fri May 03, 2019 9:04 am
#16118801
Owl decapitate Genichiro, you can see Owl place something(Genichiro's head) beside Isshin's body, he took the Black Mortal Blade from Genichiro
- Fri May 03, 2019 9:29 am
#16118810
Yes, The Owl presumably does this during Sekiro's fight with Isshin and Emma. There doesn't appear to be much information about how Genichiro initially acquires the blade or how The Owl is able to wield it, however. My guess is that the Black Mortal Blade acts largely as an inverted version of the Mortal Blade. The Mortal Blade kills any who draw it, and is capable of "severing immortality". The Black Mortal Blade, then, likely does not kill the one who draws it (and possibly grants them some form of abilities?) and is capable of returning immortality, in the form of "opening the gate" to the underworld so that those who died live again. We see this happen in the non-shura game endings when Genichiro strikes himself with the blade, returning Isshin, The Sword Saint from the underworld.
- Sun Sep 27, 2020 10:30 pm
#16260632
Maybe Owl never draws the black mortal blade. Maybe he defeats Genichiro the same way Sekiro does in the first fight on top of the castle, then in the few seconds while Genichiro is reviving, Owl takes the sword from his hand (already drawn) and kills him with it. This would mean that Owl can never really put it away unless he becomes immortal or decides he never needs to draw it again, but there's something very appropriate to the Shura ending about a sword you can never put away. A little like the original ROFAP.
- Fri May 10, 2019 3:45 pm
#16120568
Does this blade lacks the power to kill immortal creatures? Neither Genichiro nor Isshin can kill you for good or disable your resurrection power in final encounter.
- Mon May 20, 2019 4:49 pm
#16122912
The first Mortal Blade (不死斬り Fushigiri/Immortal Severance) has the power to slay immortal beings. The second Mortal Blade (開門 Kaimon/Open Gate) has the power to open a gate to the underworld.
- Tue Jul 02, 2019 9:19 pm
#16130620
As an old text describing a black Mortal Blade: "The blade's name is "Open Gate", and is said to hold the power to open a gate to the underworld. It is through this power that it creates life."
- Sun Sep 27, 2020 10:25 pm
#16260629
It must have the ability to sever immortality, because Tomoe used it to kill Takeru. She used one of the swords to behead him, and was unable to get the one from Senpou. Genichiro was also able to harm Kuro with it, and Kuro is not vulnerable to a regular weapon, which is why Sekiro can't kill him with his normal sword, even at the end of the game. It probably doesn't affect your resurrection because it would either be a full game over with a bad ending after one death, or it would just block your resurrection and force them to make the last boss battle easier, or frustrate a lot of their players. So I think they just overlooked it for gameplay reasons.