The substitutes begin operating as members of the Shinsengumi. Their first job is escorting Sakuma Shozan. However, something seems to have happened between Sakuya and Shozan in the past...
I was betrayed by my colleagues 
who failed to kill Shozan
Ich wurde verraten
von meinen gescheiterten Kameraden
Sono stato tradito dai miei colleghi
che non sono riusciti a uccidere Shozan
Fui traído pelos meus colegas que
falharam ao tentar matar o Shozan