What Drink Did You Want Sir? - Tumblr Posts

Genos is nineteen.

The legal drinking age in Japan is twenty.

Dr. Kuseno wants Genos to live a normal life.

Conclusion? Once Genos hits twenty, Kuseno probably goads him into celebrating (and gives him an update so he can "enjoy the full experience," thank you Kuseno). Of course Saitama would get dragged in.

And everyone believes Genos's ID because Genos! is! famous! They could just GOOGLE his birthday, they won't spoil his night! But then they see Saitama's ID.....

"Oh, c'mon! I'm older than him!"

"It's not that you don't look old, sir-"

"Hey!"

"-it's that your ID looks fake. I can't sell you this product, I'm sorry for the inconvenience,"

Anyways, Saitama makes Genos buy any alcohol they need after that, because he finally doesn't have to deal with people at the check out.

(For a short period after this there are rumors that Genos is an alcoholic because Saitama takes Full Advantage of the situation, but he also has a way higher alcohol tolerance now.)