MASTER? Alright people, hear me out on this, MC will become Friends
with the Pet and eventually grow closer, then next she'll have the urges to adopt another Pet, let's say a Cat class (lol), after getting close to her new pet, she keeps on adopting those pets like Rabbit class, Guinea Pig class, etc, next thing we know Sakai Chihiro will become the next Chaldea master LMAO
I might have went a little too far, but not a bad idea, eh?