第1章 斯普劳特家的孩子 

The Sprout Children

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?"
...