Wow, this really blew me away! I was invested in every second of it and your writing really is captivating: the plot, the dialogue, it's all very polished! The voice acting really lends a whole lot of charm, and the soundtrack really complements the tone of the game really well!
Tava was my favourite character by far, but I was also invested in Nine's story and progression at SSL. My friend was also really interested in this project and said that the dialogue really felt true to life like you were actually at a call center.
I'd like to go through this again to try and get all the chibi art, because it's so cute and a really nice incentive to see more of the game.
Looking at some of the comments, I'm astounded you didn't have a proofreader or tester because everything seemed to play so well!
A very big and heartfelt congratulations to you and your team!