Erika knows the route to school pretty well. She walks it every day, after all. She could do it almost in her sleep, which means it's a good opportunity to get lost in her own thoughts for a while. Something new and unexpected she needs to pay attention to almost never shows up.
And off to school with Erika. She's not going to be distracted all day thinking about the hot older girl who thinks she has a good build, you're distracted-
School isn't too hard, fortunately – and she's not the only one distracted, at least, so the teacher's wrath mostly avoids her. (There's a lot of chatter about a high end cram school that opened a local site only a year ago, and has started offering more scholarships and promotions lately... And a lot of students seem half asleep.)
Luna left Erika at the school gate again – apparently it has something to research at the library – but it meets her as she comes out.
"Girls around your age – all of the inner Guardians should have been born the same year as you. They'd all be born under a star sign ruled by their respective planet. They'll likely be exceptional somehow... Strong spiritual power, or physical strength, or intelligence, or force of will... I can sense someone's power levels if I focus on them, but that isn't a guarantee."
"It's possible she's the lost Princess, or an Outer Guardian... But it's also possible she's a servant of the enemy – whether she knows it or not."
"...I'm not sure. I know..." It stops, then shakes its head. "There's things I don't remember, but I know there's an enemy – or multiple enemies – who will want the Legendary Silver Crystal for themselves."
"No. The Princess is the one who guards it."
Pause, then: "Sailor Guardians do have Sailor Crystals – but those are ordinary star seeds, just unusually powerful ones."
"Something different. Everyone has a star seed inside them – it's the source of the energy you draw on as Sailor Moon. Losing your transformation item would be inconvenient. Losing your star seed would be deadly."
"Usually I go to the library. Don't think I want to go back the scrapyard yet, something might still happen."
"I will take that as assent." Off to the library! Today, after brief consideration, she will take a book on archery.