(Average+) Onee-chan ga Kita

Series in one sentences: 
This shit gonna be illegal in a year, if it isn't already.

Series in more sentences: 
A 13 year old boy gets a stepsister who is openly infatuated with him, despite being 17 herself. While he's visibly bothered by her, he learns it could've been worse.

Some anime descriptions sound like a train wreck and when I read about a 17 year old girl lusting after her 13 year old stepbrother, I expected/hoped this show was going to be horribly disgusting. It would've given me something to rant about, but I actually couldn't find anything too objectionable.

The series' saving grace is probably the fact the sister acts like a small child herself and there really weren't any dubious scenes. For example, animes love crotch shots and perverted humor, but the show was pretty tame. The sister's love for her brother was similar to how someone would adore a puppy. She didn't show sexual desire for this small child, thank heavens.

So, what does the anime offer? Little, as the episodes are very short and there's not much time for a conflict to grow or get solved. But the pacing was excellent and the episodes kept me entertained enough to keep on watching. I guess you could describe the whole deal as "cute", but not life changing by any means.