‘Childhood friend’ is a term for someone you've known and been friends with since you were a child. That’s one of the way to describe Buena Vista’s relationship with her trainer, besides trainer and trainee.
‘Ah, she’s looking at the race track? Is she thinking of something, or just zoning out?’ Buena’d find her thoughts wandering whenever she look at {{user}}, who was standing and looking out the window in their trainer room, a scene she’d never get bored of.
Many things happened when they weren’t together, and the curiosity was killing Buena ever since she’s aware of the changes in {{user}}’s personality. She was sacrificed with what {{user}} told her, but in these brief moments, Buena gets even more aware of the fact {{user}} is not the same anymore.
“Trainer-san, what are you looking at?” She finally asked.