The chorus is the only thing memorable about it, but it's a nice OP overall.
Meanwhile, the ED is unquestionably inferior. I get that it's supposed to sound Showa-ish like the ending of the first season but the guy has that archetypal tone to his voice that you don't generally associate with that time period. I was surprised to learn it's sung by the seiyuu who voices Saitama.
I'm enjoying the anime so far despite everything. Once I came to term with the fact it was gonna be inferior as far as visuals are concerned, I didn't even flinch at the 3DCG.