Yuuki Himuro

Living at the dorms is a girl named Yuuki Himuro whom Kudryavka knew and was roommates with for a time in Kudryavka's home country in Europe; Yuuki is half Japanese, a quarter German and a quarter Russian. She is the president of the science club at the school and came to take part in a cultural exchange program. Everyday, Yuuki is absorbed in various strange research projects and experiments and could be described as a logical genius.

(Source: Wikipedia)