My god, where do i start, i mean its surely not monster by any length but boy oh boy this manga surprised me, i discovered it while i was reading about naoki urasawa and pluto striked me as i read and watched astro boy when i was a kid and i was like meh how pluto from that manga got his own manga, i just dropped it as a joke but i picked it back after a year casually and god i was surprised as i didn't knew it would be this good. You know it's hard for any manga to topple monster but only naoki urasawa can surprise me like this.
You can just read it and if you enjoyed any of the urasawa's work then surely you will love this one.