Tomoko seems to be a girl of average height and slender figure. When not in her school uniform, she dresses in a yellow sweater, with a dress on top. She is sometimes seen wearing a green jacket throughout the episode.
Tomoko has greenish\blueish hair that is always tied into two braids on each side of her head. In her regular day attire, she is seen with two yellow bows, each attached to one end of each braid. She also wears circle-shaped glasses that cover her dark blue eyes.
Tomoko met Makoto back when they were classmates, but they didn't meet at school. One day, near a river, three boys were teasing her about the fantasy stories she liked to write and they took her notebook she was writing in and didn't want to give it her back. Makoto, who was passing by, saw this and yelled at the boys to stop what they were doing. The three boys recognized Makoto and immediately left, scared of her.
Afterwards, Makoto introduced herself to Tomoko and, after seeing that both were wearing the same school's outfit, she asked her if she also went to the same school. Tomoko confirmed this, saying that in fact they were in the same class, something that embarrased Makoto. Makoto then noticed that Tomoko was writing a story in her notebook, so she took it without her permission and started to reading it. When she finished it, Makoto told Tomoko that the story was really good and encouraged her to keep on writing.
"Takase" is a surname with the kanji respectively meaning "maximum" and "swifts". Her given name means "wise child".
- She is the only known character in Sailor Moon who attended Makoto's old school.