Translation (YouTube video has subtitles):

Aqua: Wait, before you go, I need to ask about the color of your panties...
Iroha: Today's...?
Aqua: Check it properly now please
Iroha: Check it...?
Aqua: Check it now please
...
Aqua: Did you check it?
Iroha: Ah... I checked...
Iroha: Eh, is this...! Well...
Aqua: Oh, you're not... well... Then I'll make sure it doesn't come out on the stream
Iroha: Oh, really?
Aqua: Yeah, sure. Hold on, hold on. I'll mute it for a moment.
Aqua: Okay, it's muted.
Iroha: It's... mint green...
Aqua: Thank you~!
Iroha: Well then, see you later
Aqua: Thank you~! Yeah, see you later!
(At the same time) Iroha: Could you tell me the color of your... Aqua: It's mint green~!
Iroha: Wait! Hey!! You..!
Iroha: Ah! I got tricked! I got tricked by Aqua~! Damnit~!!
Aqua: It's mint green~