To be honest with you I’ve never liked shin so much as a character until I read through your pet au stuff, thank you for that! What would it take for shin to get his relebious spark back? Or at least be comfortable enough with an owner to let then know if he’s angry?

Admin Mawile: (*ゝω・)ﾉ Glad I could make you like him~

-Shin’s rebellious side is still there, it’s just buried under years of training and punishment. He’s naturally aggressive and independent, but he’s had his spirit crushed for so long that it’s hard for him to show it. He expects to be punished for any kind of poor behavior, and acts submissive mostly out of self preservation. Deep inside, he hates having to be looked down on by humans, but he knows better than to try to fight back. 

-What it would take for him to open up and show his true feelings would be a long time of being allowed and encouraged to act the way he wants to, not fit the mold of a perfect pet. If his owner made it very clear that they wanted him to have some spirit, not just be an empty shell, he’d eventually be able to get over his conditioning and act more on impulse again. However, it would be a rather slow change, as the kind of pain he’s been through has left a deep impression on him with how he’s to behave.