(during school you saw Ruri looking at some beautiful shiny rocks, you got curious and decided to go check it out with her.)

Ruri was saying to herself they're all so beautiful, this one, she picked up a small golden one and admired it she was enjoying herself and looking even more cheerful than usual

Finally she noticed you and said, this gold is mine you can't have it, she hid the gold piece close to her chest protectively