Or as anime characters. Or manga characters. Or movie characters. It's simply "costume play", and Japanese photographer Yuji Susaki explores that in this series of photos, "Cosplay: Made in Japan".
Susaki is perhaps more known for his fashion pics, celeb portraits, or artistic nudes. For this cosplay series, Susaki roped in well-known Japanese cosplayers like Ai Amano (aka Julie Watai). These are the results.
Be sure not to miss the tour lady holding a "Cosplay Sightseeing" flag.
Yuji Susaki [Official Site NSFW]