A first love with a dangerously addictive “swamp” guy— I want a wonderful romance like something straight out of a girls’ manga. Momoka Kinoshita, a 25-year-old office worker, was dumped by her first boyfriend after refusing to sleep with him. Drowning her sorrows in alcohol until she blacked out, she awoke the next morning… in bed with a stranger!? Her partner turned out to be a college student, five years younger, with unbelievably good looks. But—he’s the type who “never refuses whoever comes, and never chases whoever leaves,” with absolutely zero sense of commitment in love—a true “swamp” guy! She had dreamed of glittering romance: a princess carry, heart-pounding dates, blissful kisses, a magical first night… But this? Absolutely not the kind of love she wanted to fall into! The romance-battle begins between a zero-experience-in-love girl and a super popular ladies’ man!