[F4M] Mina lost a bet with Mineta, as punishment she now has to go and buy some porn movies for him, but once in the shop the director can't resist and asks her to take part in a shooting that will then turn into a real interracial porn
The Tokyo Dome is the biggest concert venue in Japan. It's so well known that Japanese people use it as a unit of size, like saying "That new building is the size of two Domes!"