In short: it's WORTH A READ. Admittedly it has a simple, unoriginal plot, but the characters and their interactions make it enjoyable to read.

There isn't much to expect story wise:
Our MC is reincarnated and adopted by a renowned magician. Our MC grows to become insanely powerful, but he has no common sense.

The art can really make you feel what the characters are feeling, and it conveys the power of casted spells very well.

Most of the characters have distinct personalities that make the story that much more enjoyable to read. The banter between them is funny because it cuts tension and brightens the mood, which prevents the manga from getting too dull.

Again the story isn't original, but that doesn't mean the manga is rubbish. What makes this manga enjoyable is how the characters interact and how they develop over throughout the story.
What's important is that the manga is enjoyable to read, even with its flawed story and structure.
There's no harm in reading a few chapters because you might really enjoy it, if you don't then you can always drop it, so I say give it a shot.