At this point not exactly able to tell what and how exactly...but one thing for sure is that liquid Kufa made Melida drink... But I'm personally completely lost at why he put it in his and then in hers...
Rushing through those first manga chapters, holy hell. Though probably the best choice, since there's no strong logic in this professional assassin's choice to risk his life supporting this girl instead of doing his job.
They also casually skipped over the ero scenes to awaken her mana, dang x) Maybe next week, but I doubt it's going to be much.
The setting of the world is really cool, though, and the fight scenes are interesting to watch at least.
It's sorta like looking at a high school anime from the perspective of an adult that knows the big reveal at the end of it. That if she doesn't exceed or live as people wish her to do so, he'll be forced to kill her. Like her point of view, she got a potion that means she can do Mana and things will go her way now, she can just live the same as the other girls. But outside of it, there's a single trip up and she's a goner. A weird new take on it I suppose.