After the death of Nimi-san, the Shinsengumi must tie up some loose ends and eliminate the remaining Roshigumi faithfuls.
...has reached the point where 
there’s no going back!
!وصل لمرحلة لا رجوع عنها
kann jetzt noch umkehren.
faire marche arrière !
siamo al punto di non ritorno!
когда назад дороги нет!