Makoto transforms into the Energetic Fighter, Sailor Jupiter. Makoto is the brawn behind the Sailor Senshies, with a strong will and outgoing personality. In combat, Sailor Jupiter often takes the role of morale booster, convincing the other Scouts that they can defeat their enemies. The tallest of the Inner Senshi, Makoto often prefers to close in oon an enemy for hand-to-hand combat (she knows karate) rather than use her Sailor Senshi Attack. Makoto was kicked out of her old school for fighting and transferred to eighth grade at Crossraods Junior High where she was first befriended by Usagi. Unfortunately, the new school did not make uniforms in her size, requiring her to keep the beige-and-white uniform at her old school. Whenever Makoto meets a cute guy she instantly develops a terrible crush on him, claiming "He reminds me of my ex-boyfriend". She has a special place in her heart for a boy named Ken, whith whom she has been best friends since they were both very young. Makoto is an excellent figure skater, a talented housekeeper, but does not put much effort into studying.
Both Makoto's parents died in a plane crash. Though still young, Makoto lives alone in a small apartment in the Azabu Juuban district.