Sushi, anyone?
Having a normal luggage is dangerous, since you’re running the risk that another passenger might confuse it with his own and accidentally take your luggage, your temporary home and all your valuable belongings.
That’s why this group of people traveling together came up with the brilliant idea of making a luggage case like no one else has, and to make sure the people of the group could recognize it, they made all the suitcases have a common theme: sushi.