I know we've been remiss in blogging WanPanMan, but others took upon it. I have some small bones to pick with Zyl, like this:

However, while the relationships in Sunred remain essentially static over the course of the two seasons (with similar crises at the end of each), the relationships between Saitama and others heroes in OPM evolve considerably as Saitama enters the world of the Hero Association.

Sunred had seen significant changes, although not always for the better. The difference is that One Punch Man makes the realignments a part of the main story, whereas Sunred swipes them under the carpet of daily vignettes.

But overall, Zyl fills in admirably, picking in on the ranking system in Hero Association.