SessKagu
It make me laugh when raisins call SessKagu a “crackship” when :
-There are official arts of them printed on official Inuyasha’s photobooks.
-There are official goodies of them together
-Rumiko Takahashi said that SessKagu’s story is similar to MirSan. She said that in the beginning she didn’t intend to entangle Sesshomaru and Kagura so much but it went natural with the flow of the story exactly like Miroku and Sango. From 《Rumiko Takahashi Book》 2019
-Kappei Yamaguchi said that he likes Sesshomaru and Kagura’s adult relationship because Inuyasha and Kagome are still young, they can’t confirm their feelings for each other and they are still in the pre-romantic relationship. From the magazine “ANIMAGE”, November 2009.
-There is an article from <Takahashi Rumiko Bon Vol. 14> written by the mangaka Iida Koichiro, approved by Rumiko, that it says that Kagura ends up losing her life because of her rebellion against Naraku, but her feelings for Sesshomaru are requited.
So, yeah, the author herself and one of the seiyuu compared SessKagu to 2 100% CANON couples and, if they could do this, evidently there is something special about this pairing that makes it close to a canon couple.
