Originally Posted by
Nanaya
It's all to market something people wouldn't otherwise give a fuck about because if they're interested in one thing, some individuals will suddenly feel the need to see the whole picture. Even if you are only getting one small puzzle piece that isn't relevant to the story you originally care about so much as the setting's background mechanics. This is part of why I like the world split between Tsukihime and Fate. You still have general concept crossover that can add to your appreciation but with the different focus how much it matters is relatively even smaller. You have minor things like encyclopedia entries, interviews, afterwords, references/callbacks like to MBAACC or cameos. Though it's only a matter of time until you have to play some obscure mobile puzzle game to find out the backstory of some character that's offhandedly referenced in some Church Novel spinoff connected vaguely to the establishment of the Dark Six ritual but has no actual relevance to the story where that shit will actually(never) appear in. Imagine how messy things will be in another 20 years.