Party, Group
A Viking and his older brother join a party. They can raid and pillage better in a group like this, so it makes sense that the Viking and his older brother would join a group with other Vikings.
Look at this big group that contains the Viking and his older brother. Hear them shouting as a group and imagine their Viking battle cry.
とう
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None
This party has decided to raid とうきょう. It’s a large undertaking, but they have a large group of Vikings on the job. とうきょう doesn’t stand a chance.
Imagine this group of Vikings rampaging through とうきょう. See all the Japanese people running away and screaming as the group of Vikings comes busting in, swinging their axes and shouting loudly.