Kimura was the daughter of fellow wrestler, Kyoko Kimura.
She was often bullied on social media and it eventually led to her death, which has since been confirmed by STARDOM.
It's not known what caused Ms Kimura's death.
"Thank you to everyone who supported me", read another message, which also implied that she had been cyberbullied. I'm weak, I'm sorry'. After leaving Wrestle-1, Kimura returned to Stardom and became the leader of a faction called Tokyo Cyber Squad. Throughout her career, she won the Artist of Stardom Championship, the Goddess of Stardom Championship, held several championships in JWP Joshi Puroresu, and also won DDT's Ironman Heavymetalweight Championship.
Hana was part of Netflix's most recent season of reality series, Terrace House Tokyo, which centered on six new strangers who gathered to live under the same roof.
Hana Kimura, 22, in her first appearance on Netflix series Terrace House.
The wrestling community shared their condolences to Kimura on Friday night. "I don't even know what to say or feel".
"Our company player Hana Kimura passed away today on May 23". Such a wonderful human being. A handsome soul. Kind. I'm dead. Thank you for giving me a mother.
In one of her recent tweets, the professional wrestler said: "I love it".
See more tributes to Kimura below.