ふふふ…ソワカソワカ

Fufufu… Sowaka, sowaka
The image references a meme scene from Hokenshitsu no Shinigami's volume 4 (chapter 30). The phrase was slightly edited by the artist to fit Kiara's way of speaking, the original phrase is "くそっ…じれってーな 俺ちょっとやらしい雰囲気にしてきます！！", meaning something like "Crap... I'm getting impatient... I'm going to go try to make the mood more erotic!!"; Sowaka, sowaka is one of Kiara's catchphrases. "Sowaka" is a Sanskrit word of blessing often spoken at the end of Buddhist sutras that can mean "happiness", "wellbeing" or roughly "so be it".