I think it was Kohaku. And I think it was the day Shiki met him.
Spoiler:
Did Taiga know or ever curious about Kiritsugu’s wife Iri after he adopted Shirou?
how does precense concealment work, outside of like EX
Is it like a 'perception filter' to use a term, or is it just 'hide good' or what
I dont play dnd sooo..
Depends on the Servant.
It is probably better to think of 'Presence Concealment' a bit more generically. The skill itself has no meaning beyond 'this is how well they can stealth', essentially.
There is some leeway to this, because in all likelihood, the Assassin Servant container itself probably carries some degree of granting the skill itself, at least if things work as according to ye olden ways.
To provide an example: In Fate/EXTRA (which luckily enough for you, I'm replaying at the moment), there's a whole section where Hakuno has to figure out how Li's Presence Concealment works by using a bunch of traps. One is against Presence Concealment through 'tools', one is against Presence Concealment through Magecraft, and one is against Presence Concealment through the martial arts.
Naturally, the last one is the one that works against Li. He is perhaps not the best example, though, on second thought, since his martial arts are super special and what-not. Still, even without knowing that beforehand, the plan with the traps was something that they came up without considering his identity. I.E, they thought it would have worked on any Assassin.
Last edited by Petrikow; January 17th, 2022 at 11:13 AM.
Usually more the former. If you read the kanji literally it'd be like "sensation/hint [of someone sneaking around] cut-off". It won't make you invisible in plain view (unless your special rank does exactly that), but it helps stealth in that anything that would give a "hint" to the target of you sneaking around is "cut-off", or at the very least muddied. Basically, you have to "roll" much higher on your perception check to notice someone sneaking (going slightly back to the dnd thing, let's say if you had to normally roll a 12 on a 20-sided dice to notice someone sneaking, if they had PC you have to roll a 20 instead). So your actual "physical" sneaking skills don't matter as much because you have a magical skill that gives you a huge bonus to your stealth skill. Sometimes it might even be that your stealth skill becomes so high that they can't roll a successful perception check on you at all (like rolling 21 on a d20).
Basically, yeah, it's just a magical boost to your stealth skill is the easiest way to think about it.
True Assassin in HF.
Because you are too young. Or too stupid. Or both.
False Assassin in FSF.
Supports
This should give you a good idea.
Presence Concealment: A+
The greatest weapon of the Assassin class is Presence Concealment. When this power is activated, it is possible to completely cut off one's presence. When Hassan is thus concealed, it is impossible even for a Servant to sense his presence. One would not be able to tell if Hassan was approaching, if he had already left the area, or if he had even been there in the first place... Thus, Hassan is able to gather intelligence with impunity. Security systems of any kind are meaningless before him.
Also, Hassan-i Sabbāh is a being created from the nineteen people that inherited the name. When Assassin is summoned, one of those nineteen individuals will appear. Naturally, Assassin's abilities and Noble Phantasms change depending on which Hassan is summoned. However, the excellent Presence Concealment skill is a class ability, so it is shared by all Assassins. As described above, each Hassan has removed his or her nose and skin to create a faceless appearance, which carries the significance of being "nobody." It is hypothesized that the anonymity of being "nobody," the elimination of the self, also influences Presence Concealment's ability to "hide oneself." Incidentally, the nineteen Hassans each have unique personalities, so the reader should take care to remember that they are not emotionless fighting machines.
Each "Hassan" is not quite a Heroic Spirit, but rather merely a wraith (Heroic Spirits are heroes that have left their names in history, and assassins have no names). In comparison to the other Servants, Assassin's combat ability is lacking. However, the outlook changes if Assassin uses Presence Containment to acquire a perfect killing opportunity. Even if the first blow fails to defeat the enemy, Assassin can conceal himself again with Presence Concealment, and vigilantly await a new opportunity. As a matter of fact, even the formidable Cu Chulainn was easily defeated when he faced Hassan.
Nonetheless, there are weaknesses. In the moment that the user launches an attack, the rank of Presence Concealment dramatically decreases. A normal person would fail to notice the killing intent and be sent to the world beyond. However, Hassan's opponents are Servants. For example, with Artoria's Instinct, it is possible to sense the presence of a trap and respond to it. Strategic planning on the Master's part is essential to make the best use of this crafty Servant.
It is not FGO's fault.
They have been slowly ret-coning the face-shaving clause since Fate Zero.
Both the Waifu Hundred Face and Chibi Hundred Face were all first revealed in Zero Materials I believe.
The conspiracy has been insidious.
Serenity too.
Because you are too young. Or too stupid. Or both.
Serenity's noted to be an exception because her thing was seducing people then poisoning them. Hard to do that if your face is mutilated.