[3] Tsumura took part in the 2012 Joshikousei Shoot Boxing Girls S-Cup, which was open solely to highschool age competitors.
She beat Yuuki Kira in the quarterfinals and Tachiyuki in the semifinals by unanimous decision, before facing Eneos Akari in the finals.
[8] Tsumura was scheduled to fight a rematch with Momi in the semifinals of the 2014 Shoot Boxing Girls S-Cup Japan tournament.
[9] Tsumura fought Hana DATE at Shoot Boxing 2014 act.4, and won the bout by unanimous decision.
[10] Tsumura was scheduled to fight Kai Ting Chuang at Onna Matsuri 2015: ~J-Girls x Shoot Boxing~.
[11] It was announced that Tsumura would take part in the 2015 Shootboxing Japan S-Girls Cup, being scheduled to fight Emi Matsushita in the quarterfinals.
[12] Tsumura fought MARI at Shoot Boxing The Last Bomb, and won the fight by unanimous decision.
[14] Tsumura participated in the 2016 Shoot Boxing Girls S-Cup Asia Tournament, and faced Yurika GSB in the semifinals.
[17] She extended her winning streak to twelve fights in a row with a unanimous decision victory against Mei Umeo at Shoot Boxing Young Caesar Cup act.4.
She first beat Hoi Ling Kwok by unanimous decision at SHOOT BOXING 2017 act.1,[21] Vicky Tan by a second-round technical knockout at SHOOT BOXING 2017 act.2,[22] and Hanna Tyson, Rungnapa Por.Muangphet and Phetjee Jaa Or.Meekun by unanimous decision.
[33][34] Tsumura rebounded from this loss by winning her next three fights against Haruka Yamaguchi, Hinata Terayama and TOMOMI by decision.
[39] Tsumura fought the reigning Krush atomweight champion Miyuu Sugawara at K-1 World GP 2021 Japan Bantamweight Tournament.
[47] Tsumura announced her withdrawal from the bout on February 10, as she had to undergo surgery to remove a benign ovarian tumor.