This is exactly the kind of freak behaviour I love to see in TeruMoko, adore it. Both the characterization and the framing device in this are really interesting, I especially love how the panel borders become cracked after the mirror is damaged.

Do think it's absolutely deranged how the author said "yeah Eirin's going to shock the Lunarians with life on Earth by showing them Kaguya having giddy hatesex with her immortal rival." That decision inspires fear, shock, and an odd sense of awe in me.