Psychology/Horror that makes me understand the world better

One of the best!
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Lots of confusion and fear after waking up in an unfamiliar environment.
The world was doused with death because of human's greed and selfishness.
A boy and a girl tried to survive to find out the truth.
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My rating:

Being top 1 is a must.
This is a story about a boy who suffers from depression and abuse.
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This made me tear up.
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My rating:

MC transmigrated as a female lead character in a novel.
But things didn't turn quite well as she thought.

••• Friendship and knowledge is a key to survival.

my rating:

MC's best friend suffered from humiliation and bullying.
She took it upon herself to make those people pay.
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My rating: