beta
If this was normal situation then yes violence shouldn't be the answer. However, this is the yakuza, and depending on the gang, they have their rules. Look at what happened to Asuka dad who was the protecter of his territory. They still would trashed Aoi's family restaurant and made his family miserable and emotionally drained (and fearful) until they got what they wanted. They need get protection, move away, or Asuka could meet with the leader of the gang to see if those gang members were acting out of authority or overthrow the gang and take over the territory.