Saitama is cool.

LOL!

This one shot made me wish you wrote more, it was way too good.

GUICHE! He is strong, he is wise, he is lovely! But not today, as Saitama has ruined his world LOL

I know it's a one shot but... bro... you gotta keep it going

Twas awesome

Amazing.

It went above what we would normally expect of a one punch man crossover to be. The scientific words used, while confusing to most people, still brought a lot of humour into this, I am sure that others can also find the humour in it even if they had no idea what an atom was, showing just how well it was executed. Honestly, I haven't laughed this much in a while.

The message, and speech provided by Saitama was also very interesting, and was a much needed speech for the characters in FoZ.

Very entertaining.

9/10.

You just wanted to nerd didn't ya? that was hilarious though

Brilliant, an artistic scientific, discombobulating music of vocabulary to my eyes, hypnotical almost. Pure utter, fine artistry. Thank you whoever you are for making my day, this was a perfect representation of the anomaly that is the One Punch Man.

I jej'd
decent story, but digresses a bit into physics, breaking the flow.
Also, I really hope that wasn't intended to be comedy.

Keep going.

That was awesome. I especially liked the part where Saitama stopped the spear.

HA!

this is a great story is it just going to be one chapter? is that what one-shot means.. i'm new to fan fiction

brilliant and i have to almost beg for a second chapter just for the post (resignation of the laws of physics complaint office staff) reactions.
I would call it a fight if it was in any conceivable semblance of one.