The Man in the Mirror
Complete | Yukibayashi,Hisamatsu Eight | 2000 released
Sal is an artist who arrange flowers (it's called ikebana). He's from a family that does only ikebana. One day he falls through a mirror (works as a portal) and meets an Arabic prince Shaal (and so on, his name Is long!). This prince is actually a good guy. They slowly get to know each other (except for names, names = proposal in Arabia - at least the prince said so) and eventually have sex. The next day the mirror shattered - seperates them. Sal has an upcoming exhibition and Shaal book a ticket to Japan. Shaal told his name to Sal during the exhibition (proposal) and Sal accepted it - telling him his name. They end up together.
Koi ga Ochitara