Many current WWE wrestlers that are in the company are from Japan or have worked in Japan before working for WWE. Professional wrestling is very popular in Japan and some of the best wrestlers of all time are from Japan. Japenese professional wrestling is very different from the wrestling that we see in WWE.
Most professional wrestling matches in Japan are very hardcore and deathmatches are quite common over there. Io Shirai made a name for herself in Japan before she became a full-time WWE star. She is now on top of NXT, as she recently won the right to challenge Charlotte Flair for the NXT women’s title.
Flair won the NXT Women’s Title at WrestleMania 36. Flair beat Rhea Ripley for it. "I am the best. I was definitely elated, but I knew I was the only one worthy as the next contender. Do you know what I mean? I'm the best," Shirai stated in her interview on WWE's The Bump.
"I can't believe I get to have a match with Charlotte Flair. I knew it would come one day, but I didn't think it would come this soon. I'm so excited. This is a big opportunity for me. I definitely want to take that opportunity.
"Having a match against Charlotte Flair is already a dream come true for me, but taking the championship from someone like Charlotte makes the title more attractive. The title will shine even brighter once I have it."
Io worked for AJPW and Stardom before she made her WWE debut. Over there, she was almost as popular as Charlotte Flair is in WWE. That is why she is one of the valuable stars that WWE has at the moment.