[3] Tsunami made her professional debut on 12 June 2005, scoring a third-round technical knockout (TKO) victory against Maki Ochiai at the Kitazawa Town Hall in Tokyo, Japan.

[6] After retaining her title by majority decision (MD) against Young Kim in a rematch in August[7] and a TKO victory against Soo-Hyun Oh in a non-title fight in November,[8] Tsunami challenged WBA female super-flyweight champion, Zhang Xiyan, on 26 February 2009 at the Korakuen Hall in Tokyo.

[10] Following defeat to Yamaguchi, she moved up in weight to challenge WBA female bantamweight champion, Janeth Perez, on 6 October 2012 at the Palenque de la Feria in Tepic, Mexico.

[16] She lost again in her next fight against Arely Muciño in January 2014[17] before defeating Honey Mae Bermoy on 7 March at the Korakuen Hall, capturing the vacant OPBF female bantamweight title via seventh-round TKO.

[18] After a loss in a rematch with Jessica Chávez the following month[19] and a TKO win against Rathsada Sor Worasin in March 2015,[20] she challenged IBF female bantamweight champion, Carolina Rodriguez, on 22 August 2015 at the Gimnasio Sokol in Antofagasta, Chile.