The episode’s title refers to the first two puppets Sasori ever created—modeled after the parents he lost to Konoha’s "White Fang," Sakumo Hatake.
The episode centers on Sasori’s "ultimate" weapon: the . Unlike standard puppets, human puppets are crafted from real corpses and retain the chakra and unique abilities they possessed in life. Naruto Shippuden Episode 23
In a stunning show of resolve, Sakura offers herself as a "living puppet" for Chiyo to control. The episode’s title refers to the first two
If you still think of Sakura as a "burden," this is the episode where that narrative dies. Naruto Shippuden Episode 23