[Hana no Ei] Obe guda ♀ ga kuttsuku made no ohanashi [kōhen])i[ fate grand order )

So not because of any in-game event or dialogue between them? Or some silly meme.

cause it is oberon and gudako is you the player as they are a self insert and people like the edgy moth man so they self insert themselves with oberon

As non-player, where did the Oberon x Gudako shipping came from?