Tominaga has shoulder-length brown hair, with her bangs parted to the left. She has violet eyes and she wears a light yellow shirt coupled with a pink skirt.
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She made her debut in episode 46, when she was seen making a television report about how Raimon won the Holy Road and what was the secret of their strength. Tominaga reappeared again during episode 47, when she was seen in interview with Endou about how Raimon's soccer club started.
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She appeared in episode 5, as one of the reporters who were watching the withdrawal exam.