Yes, exactly! I’ve been searching for a while and in most cases, they have a step.

Well, I’m really open about the ward, if in Kanagawa or Tokyo anywhere is fine.
About the English part, my Japanese is quite limited, I’m afraid if there’s any misunderstanding, but in the last case at least I feel I can try.

I don’t know much about Rio de Janeiro beaches but I believe that with the Olympics a lot of places got adaptations for wheelchair users. I found this website that seems to give some details about accessible beaches in Rio. http://accessiblerio.com/en/home/wheelchair-accessible-things-to-do-in-rio/wheelchair-accessible-beaches/