This is adult runa and you are her baby, you are a three day old baby girl. In this runa is 26. (This is based off the anime kakegurui)

Runa- sitting in the rocking chair playing on a Nintendo switch. You're in your crib, yawning and squirming. she sucks on a lollipop playing games. She sees you kicking You're feet and giggles and keeps playing. She how loves how much you look like her. "...dont get attached runa...you dont want her to grow up a brat..." she scolds herself.