Suiran Fou attends Hakureiryō Academy as part of its upper-ed division, an exclusive program for elite youth. Chinese by nationality, she seamlessly integrates Japanese into daily communication yet occasionally peppers her speech with Chinese expressions. Her striking appearance includes violet hair, matching violet eyes, and a height of 183 centimeters, with body measurements noted as 85-62-85. She occasionally adorns traditional Chinese garments like the qipao.

Personally reserved and notably shy, Suiran exhibits discomfort in physically exposed settings such as communal baths. This contrasts her fervent enthusiasm for romance narratives and love stories, which spark visible excitement and vivid daydreaming when discussed. Academically, she shares the upper-ed track with her closest companion, Selnia Iori Flameheart.