佐伯 里亜奈

Born a pure-blooded Russian,  nationalized in Japan, and the school English teacher.

Her mature appearance gives off the grace of an antique doll. A calm demeanor, she is dignified in her speech.
She always stands tall and show  a gallant demeanor, which makes her simultaneously look like a princess and a knight.
Lina speaks fluent Japanese, loves ninja and samurai, and somewhat of a Japanese otaku.

Because of this culture gap, she has a goofy side that the other students love to she.
She hates any rule-breaking because of her longing for ideals like bushido and the samurai spirit. A proud teacher who is strict, but cares about her student. She's especially harsh on those who did the wrong things.