Smile and wail!!! Miyuki Arisaka, a classic beautiful girl who is as pretty as a doll and makes you want to display her in a glass box, appears in the selfish deep throat work "Smiling Mouth Toilet," which forces her to smile no matter how her throat is violated. The innocent smile of this beautiful girl collapses as her virgin throat is inflicted with pain, but because she is a masochist, Shizuku of joy continue to flow from Hitomi... She accepts such cruel treatment as her wish, smiles in the midst of panic, and continues to smile as she sucks the meat stick even as she loses her mind, becoming confused. What we see at the end of this depravity is Miyuki, who has been reduced to a "smiling mouth toilet" that continues to smile even when her throat is violated by a man's penis...