We've seen just about everything in the Japanese squared circle, including professional wrestling genius Kenny Omega take on a 9-year-old girl and Joey Ryan flip and slam his opponent using only his penis, but MMA is a whole different animal--although the line may be beginning to get blurred.

On May 20th, Japanese MMA event DEEP JEWELS 16 will take place, where a 12-year-old girl going by the name of "MoMo" will make her MMA debut against 24-year-old Momoko Yamazaki (2-3 amateur) on the undercard.

As reported by eFight, in accordance with DEEP JEWELS amateur rules, both fighters will wear headgear and not be permitted to strike the head while on the ground. The fight will be held at 43kg (95 lbs) minimum division. It will consist of two three minute rounds.

Via eFight, Yamazaki has a bit of a background you would expect to find in a boxing manga. Bullied in junior high school, she began to fight back and eventually found her way into the world of MMA and even magazine modeling. Yamazaki, who missed her last fight due to injury, took to her blog on Ameblo to comment on the fight, saying:

"As I searched for an opponent in the same class as me, it ended up being a super junior high school student! lol" There's no real height difference (they only measure at about a 4cm difference), and her career is way longer than mine, and I think she's a pretty strong girl, so I'm going to defeat her without holding back. Thanks for cheering me on!

MoMo, on the other hand, is a Japanese seventh grader training at Hakuhinkai Karate, which has produced several notable Japanese fighters, but she will still be giving up 9 lbs to Yamasaki as she only ways 86 lbs. The fight will stream on the Deep Jewels website.

Here is MoMo training.

What is no doubt to be considered a controversial bout may also be seen as a promotional stunt, especially given the rules, but the match is happening.

By - grape Japan editorial staff.