[SPOILER FREE REVIEW]
First of all, one more work from Yusuke Murata wonderfully executed. Here you can notice the art of him evolving, and you can see things (faces, battle inspirations, characters) that are always present in the One-Punch Man on present days. One of the thing that i most noticed in this one-shot is the main character, that are almost the same as Genos from OPM.
Personally i love the traces from Yusuke, his art is amazing.
Now, talking about the history, this is one more generic full of japanese cliches.
The characters, the history, everything except the art.
But, the final balance was positive, is funny.