Talk:Mayura Otomi/@comment-38517857-20190213234413/@comment-43547932-20190818201524

It's from the light novel, the one teased in the special chapter of 9 pages with Shimon and Mayura on a deserted island. Once she ascends as the Head of the House and Byakko, she still feels too weak and,  so, she goes to ask Shimon for more training supervision. They bicker and banter a bit before he accepts, as usually, but then he really starts training her and lots of things happen, among which the stuff you quoted.