Kammala jumla mai zuwa: A watan Oktoba na 2017, bayan gasar cin kofin duniya ta 2017, wanda aka yi a Montreal, Kanada, wani bidiyo na kafofin watsa labarun ya nuna nasarar da Shirai ya yi a filin wasan motsa jiki sau uku Y-juya, yanzu an sanya masa suna Mustafina a filin wasa, bayan 'yar wasan motsa jiki ta Rasha Aliya Mustafina tare da D-score na E (0.5) a cikin 2017<unk>2021 CoP don WAG. Daga baya aka kwatanta Shirai da kammala ƙarin ƙwarewa akan ƙarin kayan aikin WAG kamar aiwatar da wani ɓangare na yau da kullun akan sanduna marasa daidaito, kuma a matakan da suka fi dacewa. A watan Disamba na 2018, an raba / kwatanta wani faifan bidiyo na Shirai wanda ya fi kyau a bayyane yake mai gudanar da dukkan gasa mai gasa Mai Murakami zuwa kiɗa, musamman don ƙwarewar da ta fi wuya - wasu ba a tantance su a MAG ba - kamar aikin Gomez a ƙasa, ko juzu'i sau huɗu tare da ƙafafun ƙafa a ƙasa da kwance, ta Elena Gómez ta Spain, wacce ta samo asali daga wannan ƙwarewar a filin wasa.
2002 WC, wani juzu'i ne wanda FIG ya sanya darajar wahala iri ɗaya na E (0.5) a cikin WAG's 2017<unk>2021 CoP kuma. Tare da ilimin Shirai, akwai wani bidiyo na tattarawa sannan magoya bayansa suka raba wanda ke nuna Shirai a cikin ƙwarewar horo, wanda zai iya zama kowane makamin makomar gaba na ƙwarewar asali na asali a cikin gasa a ƙasa da vault, gami da "RO<unk>BH<unk>41⁄2 twist punch 1⁄2 or full" a ƙasa, da "1⁄2 on<unk>31⁄2 off" a kan vault kuma.