Her dedication to her friends is shown to be intense, though her alien logic often results in potentially world-threatening solutions to minor social problems.

A flashback reveals that the four girls didn't initially bond out of pure friendship. Sekine, using her psychic powers, originally charged fees to help her classmates—including Tsubasa—avoid trouble with teachers.

His internal monologue during the "boob speech" highlights that despite his female disguise, he remains a teenage boy at heart.