Rinna's voice (Pixiv Fanbox)

A 1-minute audio clip with voice acting for a scene from the manga; here's a sample

RINNA: gasps Naughty boy... If you're good, Mama might let you have a taste... but we must be quiet.

(gasps) Ikenai ko ne... ii ko ni shitetara, Mama ga chotto ajimisaseru kamo... Demo, shizuka ni shinakya