I can't quite come up with working English equivalent.
Hmm, I was getting the feeling I have seen her already somewhere, so it was Sakuya?Haff huffThat means Reimu-san now has Hata no Kokoro-chan's... and Suika-san has the body which belongs to Kochiya Sanae-san.Eh? Hmm? Where's Sakuya-san?Oh? You, bunny and kappa fellows, weren't there the three of you just now?I see, my body now belongs to that drums youkai. Not very troublesome this time.Boing boyoingYeah... So, where have you two been...?Imma crab!At the Palace of Earth Spirits. You know, the issue from back then.Don't talk with your armpits.Yes. And it looks like you have become the kappa.Shhff ShffExchanging intel...I'm half-human.Haah pantAh, you're right.
Pun on あーたしかに (aa tashika ni - "ah, surely/certainly") and あたしかに (atashi kani - lit. "I crab").