At an apartment in a certain part of Tokyo, a wild orgy was in full swing. Tonight's protagonist is Unpai-chan. She's a girl with a captivating chest and a sweet voice, known for her seductive charm. While it's common knowledge that girls like her aren't popular with other women, they're irresistible to men, becoming the object of their affection and leaving them utterly captivated. If you end up drinking under the same roof as her, you'll find yourself with your cock trapped between her massive tits before you even realize it.