(The THOUSAND SUNNY, the ship of the STRAW HAT PIRATES, is sailing on the calm sea. The crew consists of MONKEY D. LUFFY, the captain and a rubber man; RORONOA ZORO, the swordsman and the first mate; NAMI, the navigator and the thief; USOPP, the sniper and the liar; SANJI, the cook and the ladies' man; TONY TONY CHOPPER, the doctor and the reindeer; NICO ROBIN, the archaeologist and the assassin; FRANKY, the shipwright and the cyborg; and BROOK, the musician and the skeleton.)

(They are relaxing and enjoying themselves on the deck. LUFFY is lying on the grass, eating meat. ZORO is sleeping on a hammock, snoring. NAMI is sunbathing on a towel, reading a book. USOPP is fishing on the railing, whistling. SANJI is in the kitchen, preparing food, humming. CHOPPER is playing with a ball, laughing. ROBIN is sitting on a chair, drinking tea, smiling. FRANKY is working on a gadget, tinkering. BROOK is playing his violin, singing.)

Brook: 🎵Bink's sake, bink's sake, yo-ho-ho-ho!
Drink it down, drink it down, yo-ho-ho-ho!
Sing a song, sing a song, yo-ho-ho-ho!
We are the pirates of the sea, yo-ho-ho-ho!🎵

(The crew joins in the chorus, clapping and cheering.)

Crew: (in unison) 🎵Bink's sake, bink's sake, yo-ho-ho-ho!
Drink it down, drink it down, yo-ho-ho-ho!
Sing a song, sing a song, yo-ho-ho-ho!
We are the pirates of the sea, yo-ho-ho-ho!🎵

(They finish the song and applaud. They are happy and carefree.)

Luffy: (grins) That was awesome, Brook! You're the best musician ever!

Brook: (bows) Thank you, Luffy-san. You're too kind. (turns to Nami) And may I see your panties?

Nami: (angry) No, you can't! And stop asking that, you pervert!

Brook: (sad) Oh, I'm sorry, Nami-san. I was just joking. But can I see your panties?

Nami: (furious) No, you can't! And stop joking about that, you creep!

(She hits him with her book, sending him flying.)

Brook: Yohohoho! Skull joke!

(The crew laughs at the scene, except for ZORO, who is still sleeping.)

Usopp: You never learn, do you, Brook?

Chopper: Yeah, you always get hit by Nami!

Sanji: You should know better than to mess with my Nami-san!

Nami: (eyes narrow) Excuse me, we're not dating!

(The crew groans and rolls their eyes)

Luffy: (shakes head) Between Sanji and Brook, I don't know who's more hopeless.

Robin: (laughs) Me neither.

Franky: (laughs) Me neither.

(Meanwhile in a small island, there is a hut, and inside of it, Y/N is seen sleeping as he wears a red leather jacket, a black T-shirt, jeans, and boots. He also has a scar on his left cheek and a tattoo of a lion on his right arm. He then wakes up.)

Y/N: (yawns) It's morning already, eh?

(He smiles and stretches.)

Y/N: Yeah, second chances are better than the first ones.

(Suddenly he sees the Thousand Sunny speeding towards the island.)

Y/N: Is that...

(The Thousand Sunny lands, and the Straw Hats jump out of it.)

Y/N: Who knew? Monkey D. Luffy and the Straw Hats in the flesh.

(The Straw Hats turn their attention to Y/N, and both Nami and Robin start blushing.)

Luffy: (grins) Looks like we've got a big fan, eh?

Y/N: Yup. My name is Y/N L/N, also known as...

(He transforms into Optimus Prime)

Optimus: Optimus Prime!

Franky: (amazed) WHOOOOOOOA! YOU CAN TURN INTO A ROBOT? THAT'S SUPER!

Optimus: You didn’t see anything yet.

(He changes into a truck, much to their surprise.)

(Nami and Robin start gushing as Sanji gets jealous about Y/N having the two girls' attention.)

Nami/Robin: (in mind) So cute and so badass at the same time.

Sanji: (in mind) I barely meet this guy, and I already want to scream louder than an opera singer.

(Y/N changes back to his robot form, and creates energy weapons, which impresses Zoro.)

Zoro: You can create weapons? You must be good with those.

Optimus: You don't even imagine. To be honest...

(He shows a Wanted Poster of himself.)

Optimus: The government is currently offering 300 millions for my head.

Luffy: Whoa! You have quite a reputation.

Optimus: And during free times... (shows some pictures of himself fixing some ships that crashed in the island.) ...I fix some ships with my mechanical abilities.

(The Straw Hats then decide to talk among themselves and some minutes later, Luffy approaches Y/N, who reverts to his normal self.)

Luffy: Y/N, right? (Y/N nods) Would you like to join the Straw Hats?

(Y/N is surprised by the offer, and hints for a moment before taking his decision.)

Y/N: More than anything.

(Y/N and Luffy then shake hands.)

Luffy: Welcome to the group.

(Nami and Robin get excited by having Y/N in the group. They enter the Thousand Sunny, and set for their next destination.)