is a Japanese professional wrestler, fitness model and yoga instructor. As of 2025, she is a member of Best Body Japan Pro-Wrestling (BBW). She is also known for competing in various promotions of the Japanese independent scene such as Dream Star Fighting Marigold where she is one third of the inaugural Marigold 3D Trios Champions.
Yamanaka has a background as a yoga instructor and has transitioned to professional wrestling, leveraging her flexibility and excellent body control. Known as "Erina-sama," her dual-personality in the ring, combining beauty and strength, she also works as a fitness model and instructor at Bikram Yoga Kanamecho. She is also actively involved in physical expression and promotion, and is gaining attention for spreading the appeal of women's professional wrestling.
In 2023, she won the Miss Professional Sports category at the Best Body Japan East Japan competition, where she was recognized for her healthy beauty and performance. She was also featured in the competition's photo gallery. She is a member of DPG (Duncan Pro Wrestling Corps).
While working as a yoga instructor, she is also a member of Best Body Japan Pro Wrestling (BBW). She made her professional wrestling debut on August 9, 2019, at BBJ Muscle Ring 9 First Anniversary, where she fell short to Mina Shirakawa in singles competition. On November 3, 2025, at the Best Body Japan Pro Wrestling Yasuhiro Higuchi Support Tournament held at the Sportiva Arena in Nagoya, Yamanaka faced Chanyota in a singles match, which ended in a 15-minute time limit draw.
On November 9, 2025, Yamanaka participated in the Kawasaki tournament of the "Climax Party" sponsored by P.P.P. Tokyo. In a singles match against Echika Miyabi, the two wrestlers' unique strengths collided in a fierce battle, but the match ended in a draw due to a time limit of 15 minutes. After the match, Yamanaka commented with his own X, "I can't decide! I'm going to be even stronger!", expressing his desire for a rematch.
Yamanaka made her pay-per-view debut in Dream Star Fighting Marigold at Spring Victory Series on March 30, 2025, where she unsuccessfully challenged Mai Sakurai for the Marigold United National Championship. At Shine Forever on May 24, 2025, she teamed up with Chanyota, Nagisa Tachibana and Ryoko Sakimura in a losing effort against Darkness Revolution (Chiaki, Nagisa Nozaki, Misa Matsui and Megaton). At Burning Desire on July 16, 2025, she teamed up with Miku Aono, Kouki Amarei and Kizuna Tanaka to defeat Chika Goto, Nao Ishikawa, Hummingbird and Yuuki Minami. At Marigold Grand Destiny on October 26, 2025, Yamanaka teamed up with Chanyota and competed in a Gauntlet tag team match won by Shoko Koshino and Gigaton.
Yamanaka competed in the inaugural tournament of the Marigold 3D Trios Championship, entering the competition by teaming up with Mai Sakurai and Natsumi Showzuki which they won by defeating Kouki Amarei, Megaton and Miku Aono in the first rounds, Seri Yamaoka, Shoko Koshino and Yuuka Yamazaki in the second, and Nagisa Nozaki, Misa Matsui and Rea Seto in the finals to become the inaugural champions.