Thread:Zeldakasumi/@comment-118.172.180.23-20160415171812/@comment-26377724-20160415211947

To have a point of view of a middle-canonical fanboy, for me all the titles (VN, Manga, anime) are canon if they are said canon by the creators OR if they don't interfere with the canon material. Actually in S;G a very few titles aren't canon with this definition. For the case of rebellion of the missing ring, and the point of the loss memories, it can be solved very simply, suzuha lost her memories after kayano defeat her in 1975. She regain her memories in 1999 and... at this point 2 explanation, choose the one you prefer:

-She's not regain all of her memories and forgot why she lose her memories, that's why the only explanation that come up to her mind is a malfunction of the time machine.

-She ragain all of her memories and decide to don't talk about kayano in her letter because she knows that because of the attractor field convergence she cannot interfere with the lab members. So there's no point to worry them more.