The Japan on which Kris Hernandez has pinned her dreams is the thud of body slams, sweat, and garish costumes – the world of professional women's wrestling.

“I fell in love with it – the drama, the excitement,” the 31-year-old American said of her first encounter with this unusual side of Japan.

“I was on the edge of my seat with every move, thinking 'Oh my God, how come they are not dead? Can I make a living doing this? Let me try'.”

So Hernandez, who lived in San Francisco before coming to Japan, became the first foreigner to train from scratch and work her way up into Japanese women's pro wrestling.

She quit her teaching job and shared a house with women wrestlers, living off savings as she began a tough daily training regime including gymnastic moves.

Japanese Women Wrestlers Show all 9 1 /9 Japanese Women Wrestlers Japanese Women Wrestlers Tokyo, Japan A man takes pictures of ring announcer Fuka Kakimoto of Stardom, a Japanese female professional wrestling promotion, after a show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestlers fight during their Stardom female professional wrestling show at Shinkiba 1st Ring Reuters Japanese Women Wrestlers Tokyo, Japan Members of the audience watch female wrestlers fight outside of the ring during a Stardom female professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestler Kaori Housako jumps at her opponent Mieko Satomura during a Stardom female professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestler Kris Wolf receives ice spray treatment during her Stardom professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestlers Kris Wolf and Kimura Kyoko carry their fellow fighter Act Yasukawa after her last match before retirement during a Stardom female professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestlers Kris Wolf and Starfire fight during their Stardom professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Ticker tape confetti rains on wrestler Act Yasukawa after her last match before retirement during a Stardom female professional wrestling show at Korakuen Hall Reuters Japanese Women Wrestlers Tokyo, Japan Wrestler Kairi Hojo jumps at her opponent Mieko satomura during their Stardom female professional wrestling show at Korakuen Hall Reuters/Thomas Peter

“I was pretty poor then, but I wanted to become a wrestler so badly.”

“I would walk four hours across Tokyo to get to practice, do three-hour training and then get the train back,” she said.

“If I saved the train fare one way, it would be all right.”

She made her debut in August 2014 under the name Kris Wolf, wearing a costume with a wolf's head and tail.

Even in this world, which Hernandez says is harder-hitting than its U.S. counterpart, Japanese rules on hierarchy come into play.

“It's kind of militant – don't talk to the senior unless you are spoken to, clean, stay after until all the seniors leave, then you can leave. Arrive 30 minutes before the seniors,” she said.

The money is not huge – she earns $250 for a weekly show - but that's not the point.

“I was doing it because it was cool,” said Hernandez, who is now on a break after suffering a concussion.

The brutal reality of the ring is masked by a strong fantasy element that feeds its popularity with fans, most of them men.

But the rough and tumble may also be an outlet for many of the wrestlers in a country where women are usually expected to be demure and cute, Hernandez said.

“Sometimes it's a part of themselves that they cannot normally express,” she said.

“I have met so many that are so sweet and shy outside the ring, and then you get into the ring and they explode.”