Pebble's Links
Pebble views Akane as an older brother and adores him. always wants to be carried around (even when they get too big for it LOL)
Akane may act a bit dismissive around Pebble, but he really adores them. He would do anything to protect them, and maybe he spoils them a little bit.
Kazuo started hanging around Akane quite often, and Pebble took this as an invitation to become his friend, too.
Kazuo thought that Pebble was a Hatake for so long, even though they don't really look like the rest of the family. He likes them well enough, especially if Akane likes them.