In Search of Kame-Sen'nin (亀仙人をたずねて Kame sen'nin o Tazunete, lit. "In Search of Kame-Sen’nin") is the twelfth chapter of the Dragon Ball manga.
After seeing Goku's Power Pole, the Ox-King tells him that his Grandpa Gohan trained alongside him under Master Roshi. The Ox-King agrees to give up the Dragon Ball if Goku can go find his daughter Chi-Chi and get the Bansho Fan from Master Roshi. Yamcha and Puar who are listening behind some ruble quickly leave the scene when they find out the girl he knocked out earlier was Chi-Chi and rush back over to her to see if she is okay. When she wakes up, she begins to take aim using her helmet but Yamcha pretends to have been in love with her to prevent being on her bad side.
Yamcha runs away just as Goku goes over to Chi-Chi and tells her that he was sent to help her get to Master Roshi. Chi-Chi is able to get onto the Flying Nimbus but weakens Goku briefly when she pulls his tail, revealing a weakness to Yamcha who witnesses it from a nearby distance. While flying over the Diablo Desert, Goku decides to "Pat-Pat" Chi-Chi to confirm she is a girl. After Chi-Chi hits Goku for it, she secretly begins to fall in love with him.
- This chapter takes place on September 9, Age 749.
- First time Kame House is shown in the manga. In the anime it was shown earlier in a filler scene in "The Nimbus Cloud of Roshi".