Samui

is a kunoichi of Kumogakure and the leader of Team Samui. She is Kirābī's student along with the other two members of her team.

Hunt for the Eight-Tails arc
The team is sent to Konoha by the Raikage to inform them that they would be taking care of Sasuke Uchiha and Akatsuki. In her first appearance, she was shown complaining of shoulder pain which, according to teammate Omoi, is caused by her large breasts. Samui made no retaliation, unlike Karui.

Summit of the Five Kage arc
After Naruto's fight with Pain, Samui and her team are seen on the Konoha outskirts. After Omoi and Karui have a short argument regarding dating men and women, the team is shocked to find a crater in Konoha's place (caused by Pain's Shinra Tensei shortly before his battle with Naruto). While Omoi believes that Karui caused it by means of an avalanche after she hit him with a bolder earlier, Samui orders the team to find someone and ask them what happened. Later, they come across a Leaf Jonin and he explains that it was the Akatsuki who destroyed Konoha. Samui then asks the Jonin to let her have an audience with the Hokage so she can deliver the Raikage's letter. She is disappointed to find the Fifth Hokage in a coma, and asks Shizune to talk to the new leader. After which, Danzo appears in front of them and accepts the letter.

Trivia

 * "Samui" means "cold" in Japanese, reflecting on Samui's personality.