Well the reason why I put it in there was because Lyle said "I will dye Beim with their own blood" which resulted to futile resistance of men, while their love ones were raped while the MC can save their lives, also he said "I'm going to build mountain of corpses in sit on the throne." which led to mass genocide of soldiers of the alliance before they've realized they were trapped by Lyle, He's also thinking on how he will kill his mother due to the crimes of Celes. That's why when Celes called Lyle "Trash", which isn't insulting at all, because he seduced beautiful girls and led people to death, which is similar to Celes when she was fucking a lot of guys, netoring other girls and putting them into experiments, making fun of person's life which she took as her hostage, different methods, similar results, isn't it logically dark?
If you like Superhero stories then you might like The Vespidian. It is dark and yet there are a bit of lighter moments, currently we are on the cliff before a very dark plunge in the story progression. It is a bit lewd and funny, but rather serious too as in people actually die and don't come back.