I've seen the next two episodes and things are heating up.
Darian has been brainwashed and Malachite is ordered to train him in his task and to make sure where his loyalties lie.
The Scouts have been trying to comfort Serena in her grief but they are all devastated to discover what Beryl has done to Tuxedo Mask.
Malachite is setting traps to get the Moon Crescent Wand with the Imperium Crystal attatched to it and he is continuing to use for his helpers innocent people magically transformed into Negaverse servants just like the original carriers of the Rainbow Crystals had been. Serena heals them in battle of course. She cannot destroy the manipulated innocents
Darian appears at the end of the first episode talking to the Negaforce asking it why it sent him as Tuxedo Mask rather than as Prince Darian. He says he would feel stronger in the latter identity but the Negaforce says the idea is theoretically to put the Scouts off their guard since they are fond of Tuxedo Mask. So Darian submits though as my friend pointed out there are question marks sometimes as to whether at moments he is able to throw off Beryl's brainwashing temporarily. The roses he customarily throws have turned a ghastly black but sometimes you see them flashing briefly back to red. And in the second story he effectively ruins Malachite's plan on the pretense of wanting to get the Crystal off Sailor Moon.
Serena is positive they'll come up with a way to break the spell completely in the end. But there are more episodes to come before that.
One good point of note is that my friend agreed with me that while Beryl is the Queen of the Negaverse, the real supreme enemy is the invisible being referred to as the Negaforce, and he was wondering just how it would be defeated in the end.