>>35621479-- Millie and Enna are extremely close friends, practically joined at the hip. In fact I believe Millie said she wouldn't join unless Enna could join too. They live in the same city as Elira, and would often visit her and get her involved in their schemes.
-- Pomu and Elira have a great friendship of course, but Pomu and Selen are really close friends these days. That stream where they traded models for example. They even offcollabed in Japan recently.
-- Enna and Kyo hit off an amazing friendship ever since their first collab together, I highly recommend watching that. They're practically the same person. Since then they've collabed many times, people love watching their interactions. A great friendship for sure.
-- Reimu, Enna, Millie, and Petra together formed a group called NijiUK. They have some fun times together.
The first wave is Lazulight, and became famous for their really fun group interactions, always chatting together and doing things together. The second wave Obysida is known to be the complete opposite. Always going off in different directions doing their own thing, rarely collabing together.
As far as the conflicts, there's not that many.
Probably the most famous one is when Pomu got angry at Petra during the Meltdown collab, a classic moment. Pomu's stress from her job boiled over into rage several times after that, like when she wished Nina would die during Crabgame, or when she wished Ethyria would die after they destroyed her Minecraft igloo, and vowed to tear down anything they built on the server.
Nina apparently has some conflicts with the other Ethyria girls. She's kind of the odd one out, and spends most of her time collabing with the boys.
Finana got into trouble for bringing up illegal hentai sites on Pomu's membership stream, forcing her to private the stream. Pomu is so awkward in that situation. And in Lazulight's first stream together on Twitch, Finana told a really embarrassing story, and the other girls went dead-silent from the awkwardness.
Reimu got into trouble when she called into Vox's ASMR date stream, and his female fans went berserk.