i mean hmmn it contributed a little but i agree, the sexual aspect could've been left out. the whole teacher wanting to control him actually did work in the plot, since that brought the whole discussion about ichi having to choose between going to st petersburg or not, and then actually freeing himself from that control to pursue his own form of dance. but then again, this could've indeed worked without the pedophilia :|
https://www.irishtimes.com/crime-law/courts/2025/11/07/ballet-teacher-who-sexually-abused-young-girls-is-jailed-for-seven-years/
https://www.vrt.be/vrtnws/en/2020/01/10/dance-teacher-sentenced-to-5-years-for-sexual-offences-against-o/
https://www.bbc.co.uk/news/articles/cpqp29901qyo
https://pointemagazine.com/grooming-and-sexual-abuse-in-ballet/
https://artsed001.blob.core.windows.net/published/Rebecca_Tuck_QC_Public_Statement_22_October_2021.pdf
https://www.leighday.co.uk/news/press-releases/2022-news/newquay-dance-teacher-brett-bullock-jailed-for-12-years-for-rape/
https://www.bbc.co.uk/news/uk-england-birmingham-53388634.amp
https://news.sky.com/story/student-did-not-feel-safe-around-ballet-teacher-accused-of-sexual-abuse-at-argyll-dance-school-court-told-13014465

the plot could've happened w/o the pedophilia