They live in you

For Naruto-Artists' Ghosts of the past contest

Sometimes your ghosts are more real than the living people.
Be sure to listen to that song from "The Lion King". It's crucial.

Based on recent manga chapters, esp. 562-563 (Five Kages vs Madara clash).
Tsunade heals Gaara and Onoki, but meanwhile it triggers the memory.
When Jiraiya and Orochimaru were alive, when they were a team, when together they could do everything.

Because a contest without Sannin is a major no-no | Kages & Sannin © Masashi Kishimoto