Yuuta Togashi's friend from middle school with whom she went on delusional adventures. Shichimiya believes to have a magical ring called "Saturn VII" and calls herself "Sophia Ring SP Saturn VII." ~!During their middle school time, she realized that she fell in love with Yuuta but in the end decided not to change and remain a magical girl. Once reunited in present time, the old feelings eventually come back and she has to make the choice again - this time supporting Rikka.!~
