Sakura Haruno is a kunoichi from a later era mentioned in the text to illustrate the size of the Slug Sage. In the later stages of Hokage, she and Tsunade combined summon a four-hundred-meter slug that is only one-tenth the size of the Slug Sage. She is not present in the main events of Konoha Year 17 but is referenced as a known figure from the future who works with Tsunade. This mention links her to the slug summoning power.
