Marvel: Start with Level Five Mutants - Chapter 91: Thor and Mjolnir Arrive

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).

The end of all worlds approaches.

The Demon King Order harvests lives from all manners of living beings.

Within this darkness full of despair,
A single person escaped from space-time, returned to before the world collapsed, determined to change the fate of the past.

But as time pass, he gradually finds out that the Apocalypse isn’t quite as simple as he thinks…

- Description from novelupdates

“Who would study psychology unless they had some issues?!”“Who said that?”Nan Zhubin raised an eyebrow: “He's right!”----------------------------Psychological-themed professional literature.Serious Keywords 1: [Depression] [Personality Disorder] [Hypochondriasis] [PTSD] [Oedipus Complex] [Groupthink], etc.Serious Keywords 2: [Big Five Personality Traits] [Behavioral Correction] [Dream Interpretation] [Sand Box Therapy] [Rational Emotive Therapy], etc.