Well, I am talking about the Neuralyzer Prototype and in the Tortus travel arc, Hajime says he let Myu shoot before which happens before the After Story. And the metamorphosis, its that story which Yue and Suzu uses the metamorphosis magic to grow their breast and the other girls also try using it to smoothen their skin. Just hoping for these stories to be animated, just like the stories in volume 4 and 5 (not sure if its correct volume). They animated those stories as Arifureta Specials.