Ive watched this show a few times, i dont want to give away too many spoilers but here goes, The show starts off with a guy who stays at home all day and never goes outside because of his anxietys and condition called being a Hikkimori or neet, he has paronid thoughts like an evil imaginary organisation is after his life, and want to mass produce more people to stay at home by airing addictive anime and video games.
In Episode 1 a missionary girl and her aunt go to his door to share their religion with him, he freaks out and slams the door.
He later gets invited by the girl to meet up, and she wants to help him out.
Dont want to get too much into it but its very interesting and has a bit of love and dark themes, and depression, but overall i reccomend watching this series.
Its gets 10/10 for me.