&. headcanon ; decus
it’s extremely important to realize what decus’s death must have done to emil; honestly i think it’s a major point of emil & the game that tends to get overlooked ( in the sense of, how did this affect the characters left alive afterward ).
one way or another decus’s death would have affected emil, just given that the boy is extremely empathetic. despite everything decus has done – i.e. emil’s parents’ deaths – he still would have regretted another death. but the fact that it was done by his own hand. it didn’t bring any satisfaction. no closure on his loss or his pain. if anything, it only made things worse.
we can safely assume that before this point in the game, emil has yet to take a life. he’s fought yes, but never killed anyone. and not to mention, he never intended for decus to die. he lashed out because he & marta had been backed into a corner, because he wanted to protect her from alice —- decus only happened to get in between them.
decus was killed for the same reason that emil killed him: to protect the one they loved.
yes, emil will never forget aster’s death because of what it did to richter and how it set everything in motion ( however that act wasn’t actually committed by his own hand ); but he will never forget decus’s death because that was caused by himself. no ratatosk or anyone else, just him.
that blood is quite literally on his own hands.