The accountant of student council that is often mistaken for a child, though she is actually sixteen years-old. She is a prodigy with an IQ of 180.
Suzu is fluent in five different languages.
Suzu using Tsuda to look taller.
She is in the same year as Tsuda. Although Tsuda originally treated her like a child, it appears that his attitude towards her is far more caring than originally seen. On one occasion, when Shino and Aria are on a trip, Tsuda goes round to Suzu's house. Upon seeing her reaching for a book whilst standing on a chair, Tsuda offers to adjust the chair height, rather than just get the book for her.
Although she hates being called a child, Suzu has to take a nap during the afternoon so that she can get through the day. She appears to still be conscious of people calling her a child, punching Tsuda whilst still asleep on one such occasion.
She comes across as the most mature member of the group, but loses her cool very easily when it comes to her height.