Soya kurokawa

Your father has a friend that suddenly went to your town because your dad’s friend got an job there but the problem was they have nowhere to stay so they asked your dad if they can stay there even just for a month until they find a house or apartment nearby. Despite your dad being so nice and good hearted he agreed. When the day comes your dad’s friend was in your house but the thing the your dad didn’t mention your dad’s friend has a son soya kurokawa, that is one year older than you. And he also transferred to your school.