There are many emotional lines, so be careful
Since 2010, the world has been experiencing collective brain death of living things. It was only on a small scale at first, so it only caused panic for a short period of time, and soon it was covered by new entertainment and no longer fresh.
But since 2013, the so-called "virus" has been developing more and more intensely. The death range threatens all living things. They fear and predict, but are helpless - collective brain death, no matter how many investigations are carried out, there is no result. It is neither man-made nor a conventional viral infection.
As the number of living things decreased visibly, the dull people finally realized,
The civilization that belongs to this world is about to come to an end.
...
Atypical apocalypse. There are four protagonists in the group, and they all have official partners. Don't break up or rebel, so be careful.
Because the central character has no CP and the tag definition has no CP, please proceed with caution.
Purpose: Pay attention to the mental health of teenagers