Hi! Sorry for the late reply, I've been busy. Anyway, I like that the story has gotten to the part where the character(s) must train. Since the phrase "Nani the fuck?!" is used quite a few times in the latest chapter, I suggest replacing it with something else after a while.
Also, about Lucilia: I know she's supposed to be/come off as tsundere. However, usually when she acts rude toward Aiko it is unnecessary and a little bit irritating. Could you make her nicer and/or have Aiko stand up for himself more? ☺
Hi. I finished reading what you have so far for your story. I like that it's fast-paced and jumps around a lot. I suggest that you slow the action down more often to give the reader a chance to go over what just occured. Slowing down the action can also create suspense. ☺