"What?! Are you serious, Aiko?"
Aiko nods so seriously.
"I was surprised as well when I heard it from Nii-sama. It was a coincidence that Nii-sama met Kyouko a long time ago, and turns out Nii-sama has been investigating her before he met her."
Now I understand why Ren is willing to give the Hasegawa family's information to her because Kyouko-chan is the only person that he can trust. It doesn't matter if he gave the family's information to her or not. In the end, Kyouko-chan will find them all anyway so Ren used the opportunity to get the information for free literally. If Ren wants me to ask for her help that means the deal is already sealed and they both are now working together, so I will treasure this chance to get the information from her.