It'd be better if she pour it down her throught and she grew a dick, and then akko immediately have a erection and sucy start riding her. If you know what I mean.
Looking at the source, it seems this was originally posted on Twitter, though I can't find the specific post, so I'm not sure what holiday this was made for, if any.
japanesewitch
This isn't Shadbase buddy, once you get to Rule 34.net you'll see Hentai Foundary on your left, pass through there and take a right and then you'll reach Shadbase.
This particular Saber is a limited servant, meaning she can only be summoned in limited campaigns where she is available. Protagonist is accosting Saber until she is available.