The Shogunate closes off the path to Kongokaku because they are wary of Biba and the support he's managed to garner. Biba seeks an audience with the Lord of Iwado Station, though with less than pure intentions.
It's the role of the shogunate 
to help the people.
.من واجب الباكوفو مساعدة الناس
Es ist die Pflicht des Shogunats,
im Sinne des Volks zu handeln.
Es normal que el shogunato
trabaje por la gente.
Es normal que el shogunato
trabaje por la gente.
C’est le rôle du shogunat
d’aider la population.
Tra i tanti doveri dello shogunato,
c'è quello di aiutare le persone.
É o papel do shogunato ajudar as pessoas.
Что вы, помогать своему
народу — долг сёгуната.