KnB: Thank you, Onii-chan

AU On the 21st of August, Year 20XX, a seven year old boy with a tuff of teal hair tousled to the side and cerulean eyes died on a hit and run incident. Two years later, a middle school student opted to take a short rest on a nearby park only to be disturbed when a child suddenly threw himself on his lap crying, much to his shock. Five part one shot.