Kusunoki Kazuha

One of the girls in the class the protagonist teaches. She's a well mannered princess, who exudes maturity.

Born to the upper crust of society, her father is the president of a pharmaceutical company; aware of how happy and blessed her life is, she firmly believes in bringing happiness to others as well.

Her favourite motto is, "Do a good deed every day!" which she practices.
Her breasts have an odd trait of secreting milk in response to sexual pleasure, ontop of that she has the largest bust of the entire student body, because of this she a complex about them.