It's the start of Number Six's party's operation and as expected, Number Six comes up with an unbelievably dastardly plan one so wicked that even Snow, Rose and Grimm are disturbed by it. I was honestly surprised that there wasn't even a notification exclaiming his evil points have increased after he explained the plan 🤣. The ruins seem like they could provide some clues about the origins of the Artificial Humanoid Battle Chimera judging from Rose's and Russell's reactions but the anime doesn't spend much time exploring that mystery. As for the ancient weapon, I wasn't expecting much from the animation but it ended up looking more silly than cool. To make matters worse, the studio even cut corners by not showing how it emerged from the ruins in the first place