>>9883275Takamori was pretty forced in the initial months, but during/after their vacation trip together (yes, they met IRL since Kiara was in Japan before moving back to Austria) they probably grew closer as friends.
If you watch some of their collab streams during the vacation period or just their last in-person karaoke together, you can pretty much tell they like each other lots as friends. Just that the two often play the 'clingy and tsundere' dynamic sometimes. It does get cringey but I've grown to enjoy it now that I know how their friendship are.
Calli appreciates Kiara a lot since when they first debuted, she only had Kiara. And knowing Calli is somewhat a perfectionist, sometimes Kiara reminds her to talk to her if she needs.
Not sure about the other anon, but all of these can be found in clips and streams.
tldr; they're forced at first, but once you get to know that they're actually good friends then it isn't so bad.