[One Piece] Dad! How Can You Sleep at Your Age!

[Content warnings: Navy-centric story, family-friendly daily-life fluff, a whole bucket of sea-loving men, and a rebellious little sister with master-level gaslighting skills x sea-loving men]

Lina, Zephyr’s youngest daughter, won first place in the Marines’ affiliated elementary school’s first-grade essay contest with “My Dad Is an Admiral.”

Ever since she was little, Lina bullied Rosinante, the kid next door whose father was Admiral Sengoku, whenever she felt like it. When she had nothing better to do, she bullied her dad’s students too. Aokiji, Akainu, Kizaru… They were all her defeated underlings.

She was practically Marineford’s little devil.

One day, Lina awakened Observation Haki.

She foresaw that her own father would destroy the world. Even worse, Rosinante’s dad would become Fleet Admiral!

Lina burst into tears on the spot!

In her previous life, she worked herself to death at the System Bureau. She had finally earned a chance to be reincarnated, and this was her first time being human.

She had carefully picked her parents, determined to live the high life as a second-generation rich kid and sponge off them forever.

She never expected her dad to have a chuunibyou meltdown right before retirement, or to fail to become Fleet Admiral!

If she couldn’t write an advanced essay like “My Dad Is Fleet Admiral,” then her intelligence, her beauty, her virtue, and even her soul would be destroyed.

Her dad was nearly sixty. How could he sleep at a time like this? Get up and earn that promotion to Fleet Admiral!

…

No matter how much Lina cheered him on, Zephyr refused to apply himself. Meanwhile, Rosinante’s dad next door was practically Fleet Admiral material.

Faced with such an incompetent father, Lina decided to do it herself.

How hard could becoming Fleet Admiral be?

Lina contacted a former colleague from the System Bureau and got herself the Prison-Prison Fruit.

Then she ate it and bonded with Impel Down.

The stronger the prisoners she sent to Impel Down, the stronger she became.

So Lina started making arrests left and right, with no regard for Marine ethics or professional standards.

Come on, who needs all those rules?

Just get them into Impel Down.

Under the banner of “Marines and pirates are one big happy family,” rule-breaking Lina invited the Four Emperors and the Revolutionary Army to visit her Impel Down.

She tricked one Emperor at a time, and the Revolutionary Army had even worse luck.

A Surgeon of Death who couldn’t stand to watch called her out: “She’s a parasite in the Marines, colluding with pirates and plotting against the World Government.”

At last, thanks to Lina’s tireless efforts, the Marines occupied Mary Geoise and became the masters of the World Government.

Zephyr had only looked away from his daughter for a moment. He stared in disbelief. “...Lina, what have you done now?!”

“I got you promoted to Fleet Admiral.”

Lina draped a Fleet Admiral’s robe over her father’s shoulders and clapped her hands. “Dad, if you won’t do it, plenty of people will!”

“Isn’t that right?”

The crowd of “Marines and pirates, one big happy family” behind her answered in unison: “That’s right!”

**

Zephyr was very worried about his daughter’s marriage prospects.

Lina’s rebellious streak often gave him nightmares. In them, Lina ran off with some blond guy who captained a pirate ship.

So Zephyr had plenty of requirements for his daughter’s future partner. “First, he can’t be blond.”

Rosinante touched his hair and decided to dye the stuff green.

“Second, he can’t be much older than Lina.”

Kizaru quietly took back the step he’d been about to take toward his teacher.

“Then, he can’t be a pirate.”

Shanks hurriedly hid in a closet.

“Then, he can’t be unemployed.”

Kuzan started looking for a job.

“Then, he can’t...”

Zephyr came up with a long list of requirements, and not one of Lina’s boyfriends survived them.

…

Impel Down mini-theater

Law: How did you all get arrested?

Ace: Lina said Impel Down provides meals.

Marco: She said Ace was in Impel Down.

Whitebeard: She said my sons were in Impel Down.

Red-Hair: Lina said she’d split the bounty money with Beckman, so Beckman brought me here.

Rayleigh: She said there was booze in Impel Down.

Luffy: Lina said Shanks invited me to Impel Down for a big feast!

Sabo: She said Luffy was waiting for me in Impel Down.

Kaido: She said she was going to start the greatest war in the world and asked me to come to Impel Down to discuss it.

King: Lord Kaido, you’ve been tricked. She told me you were in Impel Down, so I came too.

…

P.S. First version of the blurb, February 16, 2026.

Theme: Your parents working hard is better than working hard yourself