Terror Twins

Terror Twins was the name Deidara and Kasumi earned as mercenaries during pre Naruto era.

History
Few years after the Third Ninja World War Kirigakure lacked of the necessary staff to take care of minor missions. Because of this, Yagura asked the Academy techears to create a genin team with the best Taijutsu, Ninjutsu and Genjutsu students. Soon enough the team was born but the absence of a leader was a problem. Was then when Yagura named Shinobu as the commander, but she wasn't so happy about it. Shinobu had had a rough time during the war, she had lost enough friends and certainly did not want to take care of a bunch of kids. So she imposed a condition, she would take care of the team if they would able survive a soft version of her poison. The genins were convened in a remote cave where Shinobu was waiting. After introducing herself she shoted one senbon with poison to each student. After two weeks of being sick, Kushimaru and Kozue health was restored without side effects. Kasumi survived too but she lost the sense of taste for ever.

Trivia

 * Kushimaru was the best Taijutsu student in the Academy while Kozue was the best at Genjutsu and Kasumi was the best in Ninjutsu.
 * Shinobu never wanted to be their sensei but she deeply cared about them.