Quoted from Tmezel:MEZELmods
Concept drawing of the back building on the left. The Subway building will be enhanced with a 3D facade and enhanced signage. [quoted image][quoted image]
Instead of subway in English, do one that says chikatetsu (Japanese for subway) in Japanese Kanji characters:
地下鉄
You could put subway in English in small letters below it. That is generally how they do those signs at subway/railway stations in Japan. Just a thought.