Chiba ( å è ` å Chiba-shi ) is the capital city of Chiba Prefecture , Japan . In the Heian period , the first records related to the city of Chiba record the emigration of Taira Tsuneshige ( å å é ) to Chiba . He proclaimed himself `` Chiba no Suke '' ( å è ` ä '' ) and governed around the region we know as Chiba city today .