Japan's manga cafes and capsule hotels are generally considered the domains of men, with cramped, dark spaces not particularly alluring to female customers.

But with businesses realizing they are forgoing 50 percent of their potential customer base, some have introduced new offerings designed to appeal to women, offering a relaxed, and most importantly, safe environment.

"This is my first time here," said a woman who visited Hailey'5 Cafe in Tokyo's Shibuya Ward recently. "It's bright and fashionable. It changes the image of a manga cafe."