After Lucas levelled up his DFM to level 8, making him feel poor again, Lucci appeared on the beach, facing him with her gigantic face.  Since Lucas had enhanced hearing, Lucci's voice was too loud for him, which made Lucas scold her.

"Mo," Lucci let an apology look as she bent down her head to Lucas. 

"too sensitive as always," knowing that he can't blame her for his mistake, Lucas jumped and landed on her nose before giving her some petting using Massage hands.  

"Moo," Lucci cheered up happily feeling his touch. Though his hand was tiny, maybe like a bag of dust, the contact was instrumental.  

"Move closer to the beach." 

Without questioning his order, Lucci did crawl on the beach, letting most of her body out of the water. 

Lucas opened his system's storage and looked at fruits that Caesar gave to him. 

[Fruit: Mutated Human module: Rubber human] [Fruit: Human module: Athletic human] [Fruit: Human module: Immunity human,]

[Fruit: Artificial Dragon: sparkling breaths Dragon]. [Fruit: Artificial Dragon: Poison Dragon]

"That man has fu**** up the brain." 

Looking at Caesar's invention, Lucas knew that he had hit the jackpot with Caesar, who is creating animals with mystical mutations in their genes. If the World Government knew about this ability, then a massive scale war would happen over Lucas.  

Petting Lucci again, Lucas took a look at the Devil Fruits before looking at the giant cow beneath him.

The fruits inside his storage were terrific.  One was about athletic man, which according to description, a human with more muscle mass and better cardio system enhancing the strength and stamina. Immunity-Human was a fruit that allows the person to be immune to poisons and diseases, not bad. And the last one was something to turn the eater into a human-like Luffy. 

Thinking about which is the best, Lucas remembered what Luffy could do with his fruit, so he decided to give it to the cow and see what happens.

In case something went wrong, he can always take the fruit back.

The banana with red colour appeared in his hand, he patted Lucci's nose and told her, "Open your mouth and eat this."

Lucci opened her mouth excitedly, expecting the fruit to be in the level of the usual food she gets.  Before she shakes violently, Lucas jumped from her nose and landed on the beach. 

"MOO." Lucci's face turned utterly green from the taste as she wanted to throw up.

Suddenly, her shape started to shift. 

The bones started to bend, changing her shape into more of a human, with gigantic b.r.e.a.s.ts.  

Her fishtail was gone and was replaced by a pair of long legs and a cow tail above.

Her figure changed into an hourglass. 

The green marks on her skin vanished before becoming white completely.

The cow nose and face features changed into human ones, and a long dark green hair grew on her head.

She has two small white horns at the side of the head and a pair of the perky white green ear, and one green mole on her neck and her size didn't change. 

"Mo-Mo, hor-RI-ble," The woman in Lucci's place said looking at the sky. 

"amazing! I've gained an ancient weapon."

Lucas remarked, looking up. What was a sea monster became a very white woman, with long dark-green hair, black eyes, hourglass body, thin waist, plump butt, and very huge b.r.e.a.s.ts.  She is still 300 meters tall. 

Lucci still looking up to the sky with a frown, unaware of what happened and thinking how bad the fruit she ate, and she is n.a.k.e.d.  She wanted to go back to the water and swim down. 

"Lucci, can you talk." 

Lucas frowned lifting his head up, thinking that she needs to wear some clothes, as he could tell he still can see her p.u.s.s.y from this angle, which literally was a cave.

"Mo, master." Lucci, like any sea monster, (or animal) understand human language, but apparently, this is the first time she could speak with it. 

Feeling weird, Lucci placed her hands down, next to Lucas, making the ground shake, and looked down, confusingly moving her fingers. 

"Mo, I have hands," Lucci seemed confused as looked at her fingers. Looking closely at the yellow point on the ground, she felt weird upon having a new body.

She let her face get closer until she was one meter away from Lucas, who just petted her nose, making her realise his identity. 

"Mo, master, why do I have hand...  and why I can spell your language." Lucci moved her hand up and touched her head, to find out everything has changed, except the ears and hornes. 

She then touched her ass, feeling that the fishtail is missing. 

But somehow, she still can call it. 

"try to transform into a complete human."

Lucas frowned, thinking that the days of comfortable travelling in the sea are over."

"MO- don't understand, Lucci," she said, trying to get used to the tongue movement.

Lucas then jumped and landed next to her ear, explaining what Zoan is, and what she is using now was a hybrid form.

"Mo, I can use six powers now." 

Happy with the information, Lucci jumped on the beach shaking the ground shake violently and earthquake around. She lifted her leg and flipped back, using Strom Legs and sending a sharp compressed air blade, which was 2 Kilometre long.

She happily then started to kick the air, bellow her and started to flow. Each time she used Moonwalk, Lucci would make a strong wind surge in Hazard Punk. 

Lucas just now thought that other than a transporting mean, he gained a weapon on the land.  

"Try to turn into a human completely."

Nodding feeling different, the hones in her head vanished as Lucci started to shrink down in an instant to 180 cm tall woman, finding herself in human form.  The ears and the horns vanished as well. Lucci touched herself, trying to find what changed. 

"You almost gave me a heatstroke."

Lucas sighed and stood in front of her while checking her from to down. She was a buxom woman with very white skin, dark green hair that reaches her back, and most importantly, two perky H cup b.r.e.a.s.ts, though they are large, they still perky and standing up, and large butt. 

His eyes stopped on the two mountains on her chest and realised that she is n.a.k.e.d. Though she was hot and pretty, things were advancing too quickly, even for him. 

The image of the Sea Monster that was happy with the food is still in his head. Lucci, who travelled along all the time, became a woman standing in front of him. He didn't know if he can call her pet anymore.

"Lucci is human; I can see the master's face now. Woah, you are beautiful." 

Happy and grinning, Lucci was lifting her head and looking at Lucas's face up close for the first time, and her eyes became terry, not caring if he is staring at her chest. As Lucas was looking for clothes for her, Lucci suddenly jumped on him and hugged him. 

Lucas felt a bit strangling as she was hugging to him and burying his face in her chest. 

"Though you gave Lucci bad food, I'm willing to forgive you," Lucci said with a childish tone, smiling.

"Arlong never gave Lucci good food and always beat her. Master is good."

"Lucci, can you get down," Lucas said, feeling some heat reaching his crotch, as she was n.a.k.e.d and hugging him. He patted her butt and helped her to get down. 

Had this be any other woman, he may just bang her in the spot. But, Lucci already had as a family member and a companion, so he wanted to take things a little bit slower and clear his mind. 

"Mo," letting his neck, Lucci looked at Lucas's confused expression, before her eyes become watery. "Master doesn't like Lucci, I'm bad as a human."

Lucci was sensitive as she started tearing. 

"Just stop crying and wear this" Lucas took some of Calorina's clothes, a black shorts and a white shirt. "And call me Lucas instead."

"Clothes, I never wore that." 

Lucci's mood changed quickly from sad to happy as she took the clothes from Lucas and wore them quickly, in the wrong way. "Let me help you," Lucas said before he helps her adjust her clothes while staring at her curves.

'Is this the same Lucci?' 

At the process, Lucas touched her skin in sensitive spots, Making Lucci look down and blush hard. 

Soon, she was wearing some shorts exposing her wide h.i.p.s, and the shirt, despite being her measurement, was lifted by her chest.

"Lucas, your hands feel better when they cover a bigger area. I always loved when you do it to my head and always wanted more, but your hands were small at that time."

"Stop confessing," Lucas sighed as he caressed her head. Well, she is still Lucci. And seems that she is acting childish.

To be honest, Lucas always treated her better than most of the humans, so this wouldn't change how he usually acts. 

"Mo ~." Lucci blushed and made a big green, letting her face get closer to Lucas. Even when she was in her Sea Monster form, she always imagined Lucas playing with different parts. 

"Why are you blushing." 

"Kiss," Lucci said, as she saw how Lucas banged the women when she was driving the ship. She let her face closer, and stole a kiss all of a sudden from his lips, inserting her tongue. Lucas opened his eyes widely, feeling his heart beat faster.

"Mo good," Lucci took her mouth back, feeling fluffy and staring happily at Lucas. 

"Lucci, who taught you that move," shocked, Lucas asked as his hand on her back. Knowing his personality, Lucas knew that things would eventually reach this point sooner or later. But that wasn't what shocked him. 

Just what's wrong with this world; a rubber man is ignorant to women and men affair much less kissing, but a Sea Monster knows this. 

"Mo, I saw how you breed with Zala, Vivi, Robin... Lucci saw it all." 

Lucci said. When she used to drive Zorro's crew, she could remember their names and shapes, and what they did. She was a sea monster, but she was smart and learned all that humans can do. 

"MOooo..."

"What are you thinking of, Lucci." Lucas let a smile before he put his hand on her head and pet her. 

He suddenly had the urge to pet her as she was in this form. 

"Eating." Lucci jumped and looked at Lucas with her black eyes. 

Sitting on the ground, Lucas took some food out of his storage, some meat and cooked eggs and rice before placing them on the ground while looking left and right at the beach, to see the two deep holes, which can host several houses, which were her footprints from earlier. 

Seems Whitebeard's Commander can't compete with him now. 

Lucci started happily at them, as she got smaller, she can taste better. Using her hand, she grabbed the rice and throws it to her mouth, feeling happy and screams how delicious it is before grabbing meat. Seeing how barbaric she eats, Lucas stopped her only to see her crying, "but I want to eat, moaa..."

To stop her from crying, he made another bunch of food that she can eat slowly. Seeing that, Lucci dried up her tears before eating again and smiling. 

Letting her have her way, Lucas remarked that Lucci has a very sensitive personality and need to be careful when he speaks with her. Guess he should treat her like a little sister. 

After she was done from eating 100 meals, without her belly grow an inch, Lucci seemed satisfied. 

"Can you show me your strength, what can you do in this form." 

As Lucas remembers, he gave her the fruit that gives her rubber power. Hearing his request, Lucci stood up quickly and run some meters away. 

Like a Sea Monster, she can cover some square kilometres with Haki, so in this form, she can use as much as Haki she can without getting tired. Wrapping herself with Armament Haki, Lucci's skin turned black ink before it turns red ink, and it could still get concentrated more without getting her tired. Not only so, but she still can wrap herself with more layers.

Lucas nodded; she would join his crew for sure, and with this, Lucas has the strongest female army in One Piece history. (Minus Big Mom, Tsuru and Nyon)

Seeing his node, Lucci became happier and raised her hand, to discover that it extended on its own. As she was confused, Lucas explained what she became and what rubber is. 

Understanding quickly, Lucci nodded, "So, I became a rubber woman, so I can stretch. I'm happy, Mo-Mo" She then punched toward the sea for her hand to extend several meters. 

"Lucci, here some ideas how to use your rubber ability," Lucas said. 

Remembering what Luffy did in the show, he explained what Gears are and how she can use them.

Lucas told that to Lucci; he never told Luffy how to use what he should discover in his own. 

That showed how much Lucas cares about the people around him. 

Since she had her potentials unlocked, Lucci understood quickly before squatting and using her rubber leg to pump blood faster. 

Her skin became redder, and some smoke extended from her body. Happily, next, she bit her finger and covered her arm with Haki, since Lucas told her that it will keep her from under control, and her hand extended to giant one before it shrinks gradually, turning her into a kid temporarily.

"Can Lucci do that when she is big?" 

Lucci was curious, as she still can become a hybrid between Sea Monster and a human.

"Maybe." 

Lucas pets her head before telling her that she can't swim anymore, but she won't draw either. However, Lucci didn't become as sad as she wanted to discover life in the land. 

"Let's go to Sky Island."

After explaining her a few words about their direction, Lucci turned into a 300-meter giant with cow horns, her clothes were going to rip off, but Lucas used More-More power to extend them. Lucas climber and placed a bed on her head, which is still comfortable as always. 

"Go this direction."

"Mo."

As usual, she acted like a cow. She used Moonwalk to fly up, covering Hazard Punk with winds, as her feet hit the air to stand up, causing some sonic bomb.

Lying on the bed, Lucas lit up a cigarette and murmured, "having an plane is better than travelling to the sea. Don't you agree?

"I don't know what plane, mo" biting her nail, Lucci said while kicking the air causing winds. "Okay, okay," Lucas pets her head while smoking. 

She should be a good guardian in the future in this case. Maybe he should send her to do some job for him. But the problem is, she is thinking very simply. 

"I miss that cow."