Seems Ringo was voiced by Kugimiya Rie (Shana, Louise, Nagi, etc.)
"Now use your feet like you always do. I'll give you the smelly dick juice you love so much... you love it right? my dick juice"
"Ah, yes, I love Souta's dick juice. Juice, juice, give me your dick juice"
"Don't stop now, Ah, you're so good at this when you're excited, Ringo! I'm gonna come soon! I'll spew the dick juice you love so much all over your smelly feet... erk, coming!!""Here, try on your dirty panties, Ringo. Well? How is your own stink? Does it make you nauseous?"
"*cough*...*wheeze*, stinks!"
"LOL you're getting light-headed from your own dirty smell""How is it? It's your favorite dick... It's getting hard"
"Yes... dick... love it... hard"