Okey, boys and girls, if you've ever seen a joke about blood type in anime, manga or other japanese / korean sources, rise your hand. Whoa, quite a lot. Now those of you, who's good at understanding them, lower your hand. Not too many, i see. To tell you the truth, i'm baaaaaad at understanding those blood-type jokes. And i'm lucky as well, so i come upon these kind of jokes pretty often (though in the last two years there've been less newly aired shows with blood-related humour). Anyway, each time i saw that joke i had to google about the blood types. But ifthe joke's beed explained, it's no longer funny, you know.
And then i saw this anime announced. I got pretty much excited and, in a way, happy. At last i'll be able to understand that specific japanese humour and to laugh at those jokes, i thought.
So far i've watched 6 episodes and never got disappointed. It's fun to watch how the four blood types (A, B, AB, O) are dealing with different situations. The show exaggerates stereotypes about how blood type influences personality, but it actually is fun. Which blood type is better at making a girlfriend and which sucks? Which one is quick to act in danger and which has trouble even desiding upon restaurant menu?
What's good about this show, it's that it not only shows how the blood types act, it's also about what they think of each other. Believe me, that's a lot of fun.
I wouldn't call the anime hilarious as i'm not japanese and still bad at getting those jokes (i'm worse only at their worldplay jokes). But it's amusing and laughable, and for me it's cognitive in a way. So i do think you should give it a try.