|園田 美月||Sonoda Mitsuki|
|Birthday||August 10th, Leo|
|Anime||The President is My Sister|
Mitsuki has long, flowing bright orange hair and emerald-green eyes. She wears the same flower hair bands Yuu wears, which are supposedly Sonoda family heirlooms. She is quite tall even among the third-years, and has large breasts that are the envy of her classmates. Mitsuki is near-sighted and wears glasses.
Normally, Mitsuki is reserved, dignified and a respected leader everyone looks up to. However, her composure collapses whenever Haruka is near. She is shown to be easily flustered and clumsy around Haruka and has frequent fantasies about her. She doesn't realize her true feelings for Haruka until late in the series.
Like Yuu, Mitsuki enjoys green tea-flavoured food and is terrified of ghosts.
Mitsuki lives with her parents and Yuu, her little sister. She became president of student council when it is announced that the school will close down in three years. Struggling with a minuscule budget, she works hard to ensure the students will have a memorable school year.
- Voiced by Saki Fujita, most famous as the voice of Hatsune Miku in the Vocaloid series.
- Her symbol is her flower hair band, only slightly larger than Yuu's and with the hanji character "姉" (meaning older sister) on it.
- Just like her sister, she likes green tea flavor matcha.