At the 2012 Summer Olympics in London, United Kingdom, Kpossi competed in the 50 metre freestyle. By doing so at the age of 13 years and 191 days, she became the youngest ever Togolese Olympian. She was also the youngest competitor from any country at the 2012 Games. In her competition, she swam a time 37.55 seconds to finish second in her three-swimmer heat. Her time was the second slowest overall, with only Masempe Theko (Lesotho) slower. Kpossi did not qualify for the semi-finals, and, therefore, her competition was over.