Tsubaki is beautiful, elegant, and intelligent, but contrary to her appearance, she loves erotic things. She especially loves dick, and while she loves putting it in, she also loves licking it. Her boyfriend, Takeshi, is always troubled by Tsubaki's tendency to lick his dick whenever she gets the chance. One day, after taking a bath at Takeshi's house, Tsubaki sees Takeshi's father's bare-chested dick and becomes aroused...