Her side tail disappeared. or she turned into her sister...
I think Ayanami sits, then Shikinami approaches and speaks, and Ayanami tells her she's being rude. Their hair is different colors, so I think it's deliberate but a bit confusing.
Eh...I-I don't think that's the case!I'm not a kanmusu, but a beaver...!?B-beaver Yukikaze...Hmm? Why are you staring at her?Go ahead.Yukikaze-san, may I sit next to you?Wait a minute! Why did you suddenly say something so rude!?