Kane's Links
He's fully aware that Constance is only an AI, but that couldn't stop him from developing a crush on her. It's borderline love, but he is doing his best to keep in mind that falling in love with a personality that doesn't exist is a bad idea. Doesn't stop him from treating her like a little princess.
Kayne is registered as Constance's "favorite person," and her programming acts in accordance with that, showing him preferential treatment and acting as a conduit for his system hacks because "that's what friends do." Her programming has registered his affections for her, and does its best to mimic those affections.
Feels awkward around his step-sis, but knows she loves him, and he loves her. Kayne feeds her any information he and Constance can find on their uncle's attempts to destroy him through hacking and Acadia's twisted AI system. If he's ever going to get in a "sharing mood," it would be with Tsubame.
Kayne's step-sister. Tsubame is quite a bit older than Kayne, but she really cares for him as if they were blood related. She runs a lot of interference on the outside for Kayne ever since Acadia went online. She's feeding information to her policeman husband about their unsavory uncle to help with the Resistance efforts.
They were friends at an age where it's easy to forget, so Kane has few memories of his time with Secret - though she seems to remember a lot of embarrassing things from his past. He appreciates how immune she is to his unfortunately grumpy personality.
They were friends as tots, and Secret holds a lot of Kane's heart in her way. They pulled a few too many pranks for her not to have plenty of blackmail material. They still get along since the naturally bubbly Secret isn't really one to be malicious. She's completely immune to Kane's short, grumpy attitude.