[* ユーザーストーリーマッピング] https://qiita-user-contents.imgix.net/https%3A%2F%2Fqiita-image-store.s3.amazonaws.com%2F0%2F12790%2F4edc3f69-38d9-735a-1621-c22e9bb31e40.png?ixlib=rb-1.2.2&auto=compress%2Cformat&gif-q=60&s=4672b9e2fa012b8f35a50b64956d141e