Hasegawa has a life-or-death encounter with assassins, and the Shinsengumi and Mimawarigumi compete over solving a fictional case.
Hence, you assumed that this tragedy 
occurred at the start of the Momotaro story.
ولهذا افترضت أنّ هذه المأساة حدثت
.في بداية قصّة موموتارو
Todo eso te hizo pensar que la tragedia
ocurrió al inicio de la historia.
Com isso, presumiu que a tragédia ocorreu
no começo da história do Momotaro.