Tsubaki Narita

Tsubaki is Makoto's second eldest sister, and she's 24 years old. She's a a biology teacher that comes to work at Makoto's and Ito's school under her father's orders to spy on him. Of all her other siblings, she does all that her father asks. She was the one who was able to ease his influence on the house when Sakura had left, and thus has a bit of a grudge towards her elder sister. Tsubaki is obsessed with Makoto (she has pictures of him all over her room walls), and so she too wants to bring him back home under the impression that she knows what is best for him as his older sister. During his younger years, he was very close to her, calling her "Tsubaki-chan" and it is clear that she still clings to the memories of him as a little boy. Strangely enough, she sends Makoto frilly dresses every so often, though she clearly disapproves of his bet with their father. She's a firm and straightforward person, with a frightening ability to lead, demonstrated when she trains her class to be ultimate athletes to win the inter-class athletic tournament. She has a bit of a shota complex, and was disappointed when she found out Ito was a girl. Tsubaki accidentally finds out about Ito and Makoto's relationship and orders Makoto to come home as his deal with his father was broken, but relents at Makoto's pleading. She backs off, on the condition that Ito and Makoto's class wins an inter-class athletic competition, which they narrowly lose. However, with Akane's help, they recreate a scene from Beauty and the Beast for Tsubaki and manage to persuade her that Makoto's passion for his acting is very real and that he and Ito love each other dearly. She finally promises not to tell their father and eventually leaves the school. She is the opposite of her older sister Sakura in that she has an obsession with pretty boys. Tsubaki means "camellia." (from wikipedia)