Shiho
Shiho works on the cryptology squad that was tasked by Shikamaru Nara to decipher the code left by Jiraiya.
Hunt for Uchiha arc
Shiho is first shown as one of the ninja assigned to Konoha's cryptology unit. She informs Shikamaru that they cannot decipher the code without a key. She tells him that someone who was close to Jiraiya might be able to help crack the code. After helping to crack the code, she then accompanies Shikamaru and the others back to Tsunade's office.
Invasion of Pain arc
Shiho is later seen helping Shikamaru and Sakura figure out what the now cracked code means. When Pain invades Konoha, she is seen speaking with Shikamaru with his father behind him. She survives Pain's large scale attack on the village along with Shikamaru and Shikaku.
Abilities
Shiho is level-headed, and despite appearing young, quite competent as a decoder. She helps both Shikamaru and Naruto in code breaking and is able to figure out Jiraiya's code based on the information she was given. She also appears to be quite intelligent, offering sound advice when Shikamaru and Sakura discussed the meaning of Jiraiya's message.