Well I did translate it to the best of my abilities, but I'm not 'certified' enough to add translations to 'complex' sentences. The gist: Yorimitsu accusing the two of having an 'impure' relationship. -continued on the relevant images-
Ah~~, so stupidThis is prohibited.You're having an impure relationship... with that lady there...Ha!?What is?No, no, Raikou-san, what are you saying...Mother has heard about it... You... You're hiding it from mother...Who told you something like that...That lady there