"Everyone looks pretty grown-up after summer break"
Shinpachi finds himself in stuck in a completely different world.  That is when the Shinsengumi sends a berserk Yamazaki to pick up the bewildered Shinpachi.
Two years have passed since the formation of the Holy Shinsengumi Empire.
Han pasado dos años desde la formación del Sagrado Imperio Shinsengumi.
Dois anos se passaram desde a 
formação do Império Sagrado Shinsengumi.