only in Japan because of age of consent laws

For completeness, worth pointing out this point can’t even be used anymore, due to overdue updates to Japan’s consent law this summer:

• The age of completely unrestricted consent is 18.
• The age of unrestricted consent with some minor exceptions is 16.
• The age of consent between peers (≤5 year age difference) is 13.

Pretty similar restrictions to several US states