After watching the subs and thinking a little on it. It wasn't so bad.
Mamori crushing so hard on Akira is dissapointing of course but is perfectly in line with her character. Two days earlier Mamori would've never questioned her sexuality and was by all accounts a normal girl. So she clinging so hard on anything that gives her some normalcy back is reasonable. This on the other hand gave us the chance of seeing a more expressive Mirei that along the illusion scene cements her like a full blown lesbian
Now the scene itself is VERY uncomfortable to watch but that is precisely the point. Torture Mirei, and considering her background as child soldier, well, it is the most logical fear to have. It does a lot for her characterization since before this she seemed to be utterly uninterested on her well being and instead fully devoted to Mamori's. In short, this humanizes her a lot
Akira and Torino's interactions seems to point that there's something larger in place than wha we thought, adding a new complexity layer to the plot and potentially outing Lady Lady as villians. Kasumi's twist was very well done and Charlotte keeps being a very entertaining character to hate
The episode was certainly the weakest so far but nothing that makes me downright drop the series. I do hope they don't pull something like this again tho.