Ah, My Hero Lady Tsunade!

is episode 237 of the Naruto: Shippūden anime.

Summary
Tenten has a flashback of her youth, while she tries to call Rock Lee, who fell down into the waterfall. When she was a child, she had dreamed to become a strong kunoichi like her heroine: Tsunade, and thanks to Guy's suggestions she tries to heal a fish, but she failed. So she attempts to sign a contract to summoning such as her heroine, but without success because of she quarrel with Guy's tortoise. So tries to go to the bars to drink the sake but she was too young to drink strong drinks. After many failures, she notes at home, after summoning a weapon, that she has talent like specialist tool ninja and from that time decided to became a strong specialist tool kunoichi.