Talk:SE.RA.PH/@comment-71.93.102.247-20171130222025/@comment-26333303-20171229221740

Lawyers.

No really, I am guessing it is because they have to get certain permissions to use other IPs, and those permissions generally are listed in a contract with a specific timeframe. Fate is a huge franchise so even though this is a collab with another Fate, the assests belong to different parties. This is usually the reason for limited collabs in any media or manufacturing.

Or it's just for the sake of having events truly be limited to urge players to keep playing.