Shoulda killed the old fart. As incompetent he may be, he'll come back with the demigod apostle powers and cause trouble to the normies around the OP mc.
Literally sees the future being destroyed by the villain they refused to kill.
Still refuses to kill said villain and would rather go on a training arc.
Train that ass so it can spread wide and not die when the villain shoves his whole arm in it again rather than stopping the villain from...
If the superhero girl with plot armor didn't exist, the question of sacrificing the 3 lives in the lifeboat to save face would have had more tension in it.
Also with this, is it finally back to fighting kaijus instead of tentacle porn?