"Though she be but little, she is fierce." 

Spunky A.I. dealing with life adjacent to a certain Mels Megabytes. Probably a tsundere. Doesn't let her Handler feel sorry for herself; getting work done is much more important than slacking off on the internet writing doll bios about That Annoying One. What, this one is about Kizuna? Oh suuure. But if so, don't make it about how she resents not having the newest clothes or the best body. Write about how she won't take any of Mels' sh*t. Because one day that [censored] will stop bossing her around. One day her Handler will get sick of Mels too. God knows Kizuna is. 

Building stuff, fighting, self-repair, reading.