if you're looking for quality, and profound reading that makes you sit back and think about who you are for a moment like the greats of your name, your lie in april, etc. and many others with the same ranking as this then this manga isn't one of them. nor is it the light novel, and anime too.
if you're simply looking for something to laugh at, or something to make fun of with your friends, or something to just turn off your brain and appreciate the effort this manga is poorly trying to make, this and the light novel should be enough to occupy at least 30 minutes of your time. if you don't feel like scrolling, you can watch the anime too.
it's not bad by any means, nor is it good enough to deserve a 9.14 in ranking. it's just painfully mid.