Ciel traveled through the magic world and became a distant relative of Professor Sprout. He was also tied to the planting system - planting plants can get rewards.

"Plant ten Devil's Snares and get 10 fragments of Binding Curse Enlightenment. Your Binding Curse has been upgraded to the legendary level."

"Plant ten Biting Cabbages and get 10 fragments of Sharp Spell Enlightenment. Your Sharp Spell's killing power has been greatly improved."

So Hogwarts has a diligent and thoughtful little wizard who is dedicated to planting trees.

Three-headed dog? Philosopher's Stone? Nothing to do with me.

Basilisk? The heir of Slytherin? Stay out of it.

Triwizard Tournament? Cedric died? That's a pity, plant a tree to commemorate him.

“..."

"What? You said the Death Eaters dug up my vegetable patch and trampled my saplings?"

...

[Original Nature-Type Popo Fruit] [Veteran of the Roger Pirates] [Gold, Silver, Bronze, and Iron] [Supreme Orange Juice] [The First User of the Face Fruit]…

As a witness and firsthand experience of both the old and new eras, Kyle’s achievements are countless, but when it comes to turning points in his life, he can’t help but recall an afternoon when he was six years old.

“A… Ace?!”

No, no!

Sorry, sir, I didn’t recognize you just now!

This is clearly Ace’s father—young Gol D. Roger!

“Little Kyle, I’ve taken a fancy to you! Are you interested in going out to sea with us? Let’s see what the ocean really looks like!”

The legendary succubus unleashed her power, and the only thing she could hold back was this↑

…

Decades later, during the Battle of Marineford, a mature, middle-aged handsome uncle descended from the sky.

“Ah, Mina-san, excuse me, it’s time for my naughty nephew to go home for dinner!”