I mean to the people confused about jeffrey if you go back to chapter 1 she names him there but never as her disciple more like a fighting buddy, also none of her disciples that received her will looked like him so it wouldn't make sense for him to be one of them.
So Jeffrey is an old friend of Lotie. He looks so charismatic but is such an adorable baby with her haha. And the disciple at the end though, he looks handsome. xD I can’t wait to read more. *.*