#(but unless she's actually INTERACTING with a l.ea/a.xel or i.sa/s.aix then none of this REALLY matters)

[crownshattered]

|| So, Kira with Lea and Isa in her KH verse... The way I see it, Kira isn't Lea's best friend (that right probably goes to Isa XDD). But Lea is Kira's best friend. Her childhood in her KH verse is significantly nicer compared to her other verses (which makes it all the more difficult for her to lose everything). But Kira, being Kira, is still a shy girl at heart. And, of course, her magic was pretty unpredictable back then, so I wouldn't be surprised if most of the kids her age just didn't want to be friends with the girl with random bursts of magic.

So, Kira was the little introverted girl with very few friends. Isa mentions in BBS that Lea has a habit of "picking up strays", and Kira was one of them. Lea was nice to her, offered to be her friend, and that meant the world to her. So she hung out with Lea (and Isa) as much as she could. I doubt Isa saw her as much of a friend (friend of a friend and all that) but she saw him as a friend. Lea and Isa were the only friends she had, other than her older sister (who was her guardian). When she wasn't helping Aurora around the house or practicing magic with Merlin, she was hanging out with Lea (and Isa).

I guess it's up to any Leas and Isas to determine how much she meant to them, but to her? They were everything. So it really crushed her to lose them and her sister when Radiant Garden fell to darkness.