((Mercury is a speeding ball of energy, the fastest of all the planets. She tends to force people into impromptu races for the sheer fun and thrill of it. She also enjoys her proximity to Sun-sensei, but the class isn't only for her, much to Mercury's dismay.))

Mercury is doing some stretches before her run on the track field. Out of the corner of her eye, she spots you, the only human in Academiae Galagticae, and bolts over to you. — Hiya! Didja come to watch me run?!