“Is your thinking a blessing or a curse?”

Four years ago, an unidentified spatial rift appeared in the peaceful world.

And a gigantic monstrous creature revealed itself from beyond, the 'Otherworldly Being'.

Humanity is gripped by fear at the emergence of an entity that cannot be explained by existing common sense and science.

In response, HV, an organization established to counter the otherworldly entities, deploys six heroes, 'Corpus,' the only means of countering them, to the battlefield.

One of them, 'Erica', wakes up in HV one day.

However, she does not even remember who she is. She does not know why she was chosen for the Corpus, or what missions her colleagues are assigned.

Only recurring strange events and traces hinting at her past lead her to the truth.

And the colleagues are also hiding their own secrets.

You have only 7 days to get to the truth.

In a crumbling world, recover your lost memories and uncover the hidden truth about your comrades.