Futakichi Girl, or Sakura as a companion, is a monster in the second part of Monster Girl Quest: Paradox.
Monsterpedia Entry
Attacks
Strategy
Evaluation
"Doesn't matter if the mouth is in the back or in the front, you still fall prey to it... I'm sure if you wanted to indulge in her lower mouth, she'd happily grand slam you. The Futakuchi Girl attacks with tongue and Taoism skills. She is a weak opponent but nonetheless, you should be careful. She has no elemental resistances. So, it shouldn't be to hard to defeat her. Now go, oh suckable and delicious Luka. Should I make a Luka-flavored candy and sell it to monsters?"