Based on a series of light novels by the writer of My Little Sister Can’t Be This Cute and this time the twist is that the brother isn’t related to the little sister he fancies.
Really, you don’t need to know more than this. Our protagonist is really, really fond of his little sister and wants to fuck her. She’s a NEET and has been holed up in her room for a year, ever since their parents died. He is a light novel author who has been writing since middle school to make money to feed himself and his sister. His novels have mostly sold on the strength of the illustrations by one Eromanga Sensei and — surprise surprise — it turns out to be his little sister.
The first episode was a bit coy about what it wanted to be, but luckily the first minutes of episode two made clear this show is trash and no longer hiding it. Having read the manga spinoff I know more or less what’s coming and I’m fine with a bit of this sort of trash to watch, but really, there’s nothing much worthwhile about this one.