For anyone curious the first season of One Punch Man is the first 7 volumes, and they are currently at 25 volumes. So it's about 25% of it.
However the webcomic has gone alot further with some fairly decent character development occurring for tatsumaki, amai mask, genos, and sonic. It's definitely worth reading it, check out the one punch man subreddit for links to fan translations (or the Irish version) if you'd like to catch up without spending a small fortune.
Man, I'd completely forgotten what the palace looks like at the beginning of the game, it's amazing how much character they let you add to it to really let you make it feel more like a home.
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