[quote=@sakurasan]
I'M ABOUT TO JUST MAKE THE DRINKING AGE 17 IN THIS UNIVERSE WITH ALL YOU ILLEGAL BRATS GOING OUT TO DRINK DAMMIT >.> [s]Ayumi wants to drink too.[/s]
[/quote]

actually the legal drinking and smoking age in Japan is 20, however, the law isn't enforced at all, so people kind of just do what they want.  No one is ever carded or anything.

there is an article about it here:https://www.tofugu.com/japan/underage-drinking-in-japan/

if you were interested XD