I say unusual in the sense of Japan seems to be the only one to have solved the issue of how do you transport 2 kids on a bike not with "big box" like the dutch and subsequently the entire western world but via 2 seats, they're apparently very popular over there as a means of transportation.
Traumatic brain injuries are so cool! I can't remember how to move my legs but at least I won't get the nerd emoji commented at me by cool guys on the internet!!!!!
I'm really sorry that happened to you. I'm not the person who was arguing that helmets weren't necessary. I wrote the nerd emoji comment because I thought it was absurd that the debate was even happening and honestly believed that the anti-helmet person was just pulling the other person's leg, now I see that that wasn't the case at all.