I, the Anti-Superman, Invade the Chat Group

The beginning was pretty good, but the protagonist's personality seemed a bit too kind. Maybe I can't accept Superman's tendency to forgive even when wronged. The male lead is actually somewhat similar to Superman, except he's more ruthless towards bad guys and willing to kill. But when facing the Justice League, I really wanted to say, "Because the Justice League came to cause trouble, Eagle Claw's death and the premature destruction of your universe happened sooner," and what were you doing, protagonist? While the Justice League was causing trouble, you kept defending yourself, your universe was destroyed prematurely, and you calmly explained things to them, even compromising with them. So weak, so saintly, you're starting to resemble Superman.

Advantages: Good timing; the protagonist is neither a brainless harem nor a slut. Weaknesses: The romance feels like it's been held back, as if it was foreshadowed and developed before being shown in the plot, but it just got left undeveloped.

I remember there was a side story about the protagonist leaving the DC universe, but it's gone now. Was it deleted?