Episode 131

'''The First Patient! Anecdote of the Rumble Ball''' is the 131st episode in the One Piece anime. It is a filler episode and was not part of the original manga. It originally aired November 3, 2002.

Plot
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Summary
After their adventures in Alabasta, the crew come upon another deserted island and split up tasks amongst themselves. Chopper is left in charge of guarding the ship, and he reminisces about the day he first made the rumble ball and his first patient, Dr. Kureha, while spending some time with the newest crewmember: Nico Robin.

Expanded overview
The scene opening on an early dawn, where all of the Straw Hat Pirates are asleep. Nami, who is above deck, wakes up and discovers an island in the distance. She calls out to ther others, and after a humorous between Zoro and Sanji, Luffy awakens and climbs up deck, sees the island, and gives a howl of joy.

When they land on the island, Sanji notices that it's abundant with fruit. He suggests that they gather fruit as surplus, therefore Nami has the remaining crew draw straws to see who gets to stay behind and watch the Going Merry. Luffy takes three, thinking that would make him smarter (which it didn't), and in the end, Chopper ended up drawing the longest straw, so he got to stay behind. And so, Luffy, Zoro, and Usopp go to gather fruit, Nami goes to survey the island and draw a map of it, and Sanji follows her, swooning.

Chopper, thinking he's all alone on the ship, decides to play captain, giving out pretend orders to his fellow crewmembers. For a while, he has fun... until he discovers that the newest member of the crew, Nico Robin, was below him the whole time, reading a book. Chopper immediately gets freaked up, remembering she was once a Baroque Works Officer Agent, and that her specialty is assassination. He tells her he doesn't trust her nd runs off into the ship (though Robin didn't seem to be paying attention). Once inside the ship, Chopper forgets about Robin slightly and decides to makemore Rumble Balls. While he does so, Robin enters and begins to make more coffee, though Chopper doesn't notice. Instead, he remembers the first time he made a Rumble Ball...

A flashback occurs back before Chopper met the Straw Hat Pirates, back to when Chopper was still learning medicine. He was experimenting with some of Dr. Kureha's medicine, until he heard her coming, and accidentally dropped a few of them in. Acting quickly, but not exacting thinking, he pressed the ingredents together and tossed the ball in his mouth, then swallowingit. his body then went under an unusual change, as his arms suddenly became muskular and grow larger without him doing so on his own.

The flashback ends, and Chopper begins to wonder how Dr. kureha is doing. Then he finall noticed Robin was in theroom the whole time, and panics again. Thinking she was trying to learn the Rumble Ball's secrets and assassinate him, he quickly eats a Tumble Ball and attacks, breaking a barrel of water. He changes back into his Brain Point form and uses his Scope move to try to find Robin's weakness. Robin just laughs anduses her Devil fruit power to tickel Chopper. She also says he's funny and cute, to which Chopper insults her while doing ahppy little dance. Then Robin handshim an empty barrel, saying that sincehe broke the other barrel, he should refill another barrel withmore water. Chopper does so and heads off into the island.

Meanwhile, Luffy goofs around with monkeys and usopp acts around as though he was dying trying to gather fruit for this cremates, making a dramatic scene. Zoro, while grumbling about being ordered by a woman (especially Nami), does what he is told and gathers lots of fruit by coutting them down from trees using his Santōryū. Nami in the meantime, is busy surveying the island, as Sanji showers her withcompliments and expresses his love. Nami says he's in the way, and knocks him out of the way.

Back to Chopper, who along with Robin, goes to gether water. When Chopper wonders why she came along, she simply says it has been a while since she hasgone for a walk like this. The finally reach a lake on the island, and Chopper proceeds to full the barrel. Robin sits in a nearby field of flowers. Chopper asks if she was really all along ever since he was 8, to which Robin replies "yes". She goes on to say she survived by working for various pirates. She then asks Chopper about the person he was talking about before. Chopper describdes Dr. Kureha as "a woman who dresses like a pirate who is a doctor". He then goes into another flashback...

He starts by saying he has spent 6 years learning how to be a doctor from her. He is seen yet again messing with medicine, when Dr. kureha shows up. She asks if he's finished reading the pages he was supposed to read, but Chopper complains, asking when is he going to do stuff doctors actually do. He then goes on to say he's already memorized all 200 of the books she gave him. Then suddenly, Dr. Kureha collapses. Chopper runs over to her, asking what's wrong. Dr. Kureha mentions that she might of gotten sick from one of her paitents. She then sas that he will have to treat her, as a test, and if he fails, she dies.

Chopper immediatel puts her to be nd runs some tests. After checking several books, and mixing medicen, he gives her agreen sphere-shaped ball, which Dr. Kureha takes. Chopper wonders if she's going to ask what's in it, and she explains that no paitent who has room in his/her heart to ask such a question; illnesses can't be cured unless the paitent completely trusts their doctor. She then eats the medicine. Chopper asksif she'sany better, but Dr. Kureha saysmedicine doesn't work that fast, and that she needs her rest. later that naight, when Chopper was about to go out to get mroe water, Dr. Kureha tells he he dida good job, for someone like him.

Back in the present, Chopper continues to say that was the only complimenthehad gotten from Dr. Kureha in all those 6 years. So insteadofacknowleding him as a doctor, she trusted him with her life; that'sthe kind ofperson Dr. Kureha is. Then Chopper realizes he's said too much, but Robin had already gottenup and was ready to head back for the ship. Before she goes, she tells Chopper she wishes she had someone to write to, like he did. And they went back together, Chopper carrying a full barrel of water (still in Brain Point).

Later that night, all the Straw Hats where eating the fruit Zoro gathered. Nami was disappointed with Luffyand Usopp, but congradulated Zoro and said he'd get to collect fruit through the night. Sanji swooned, but Zoro tells him to shut up. before they got into a fight, nami holds them both back, saying she was just kidding. And everyone laughed. Luffy then asked how chopper's day was. Chopper said nothing special happened, shen looked over at Robin, readin her book, and then added "...But it's been a great day!"

Notes and Trivia

 * The island the Straw Hats were on was never named, butit was shaped like the fruit thatgrew there.
 * Though most filler arcs aren't considered canon, this one explains how Chopper first created the Rumble Ball, and his first paitent.
 * Luffy, Zoro, and Robin are still wearing the same outfits when they left Alabasta.