Board Thread:Questions and Answers/@comment-142.68.66.103-20190713165153/@comment-37883549-20190713172803

You mean Tsugihagu*, it branches off roughly after Chapter 48 of Arc 6 where Subaru decides, with the help of Shaula, to carry out his plan to patch himself together. As Joey mentioned, the events are not canonical to the main story, however, it's still worth ar ead if you like the series.