Thread:Zack Tan/@comment-27023992-20151018141510/@comment-26501532-20151019031133

No, this side story is after vol 9 of the LN and it's not translated yet for english readers yet. Unless you read japanese or chinese you can search it up to read about it. Anything you can't find in english yet but knows about it means that it's simply wasn't translated yet. Not all stories are available immedaitely in english after the stories and volumes are published.