Synopsis
A hell fell down the sky, survival is a must.
A shut-in decided to accept reality. But the reality... became more than hell.
Monsters came from gate, people has been given blessing, in which they will have a 'specialty'. Such as swordsman, mage and more.
But one does receive a blessing... but a game system!?
Parental Guidance Suggested
-- Power
Ranking 
-- Power
stone 