Honestly I think this series is kind of wasted potential.
If they'd gone down the Hitman Reborn route and just turned it into a full fledged battle manga it would've been a lot better.
But it's episodic, with short arcs, side characters and antagonists which are unmemorable with a character motivation which gets wasted. I mean, when he discovers his parents might possibly have been "murdered", he goes full shounen trope and says "I'd rather not know than stoop so low"??? WTF? That could've been a great motivation for the story! Not to mention it literally scarred him so bad he became reclusive throughout his high school life, and now he wants to "give up on it???"
Also we don't get much character development beyond the one chapter. Just like one small chapter with each character without fleshing them out. The brother could've been more comedic but now he's more of a nuisance. The love interest started out strong but now I can't relate to her because she barely shows emotion or human like vulnerabilities. The MC's main weapon is boring.
Don't get me wrong. I criticize this manga cause goddamn. I wanted it to be great. I reread the first chapter so many times. It was like the epitome of shounen cliches that made you tremble. But nah, it's all wasted.