【こどもの日】堺筋線発車標にこいがのぼる! https://osaka-metro-pm.com/2021/05/02/%e5%a0%ba%e7%ad%8b%e7%b7%9a%e7%99%ba%e8%bb%8a%e6%a8%99%e3%81%93%e3%81%84%e3%81%ae%e3%81%bc%e3%82%8a/