The LCD forum of this series https://www.novelupdates.com/series/this-hero-is-invincible-but-too-cautious/ also the wikia Spoilers allowed. do whatever, as long as it relates to the series in someway directly.
I have absolutely no idea how the author is going to top the shitstorm in vol. 1, if he does another tearjerker, well, fuck him.
it is going to be worse. they are going back to save the world they failed. things happened there that were not shown. bigger tearjerkers. more of them. Shitstorm from the beginning that fucks everything up. crazier shit. Volume 2 isn't even finished translating yet, but it is close. and there are more volumes in the web. Volume 2 in the web is probably season 2 on its own.
Volume 3 was bad. Personality got reset to when he failed saving the first world which is super annoying unless you enjoy those idiot reckless types. All cause of the idiot goddess trying to get into MC’s pants and earn praise.