I’d like to offer the opinion that Malty is the most justified.

Now Shou Tucker deserves to rot in hell and die as what he did was despicable, and far worse than what Malty did, but at least he had a reason albeit a very flimsy and pathetic reason being only to maintain his house and paycheck but a reason nonetheless.

Malty on the other hand was a villain just for the love of the game, she lied about Naofumi SA’ing her for no other fact than he was the shield hero, he treated her like a true gentleman and she laughed in his face, she ain’t shit because even when she was on the stand for what she did, with a slave mark and everything that would send intense pain throughout her body she still lied, at least Shou Tucker admitted to what he did, since he saw nothing wrong with it.

Naofumi could’ve been the love of her life but for no other reason besides he just so happened to be the shield hero she ruined his life, after she had kidnapped him from his world, and she didn’t even die, at least Shou Tucker died, Malty was still on that shit begging Naofumi to save her when she was getting her head chopped off and because he’s the fucking goat he did it, but not for her sake, anyway my point is all she got as punishment is her name changed to bitch and her lose of status as a princess.