[System + Lighthearted + Humorous + Hogwarts Fanfiction + Fun]

In the dilapidated hut of the London orphanage, Professor Snape's face was so somber it seemed to drip water.

He never expected that a Muggle orphan's first words upon receiving an invitation from Hogwarts would be: "Is the tuition expensive? Can I take out several loans to invest?" [Resentment level +19!]

Signas, a transmigrator, awakens a system that allows him to absorb the "resentment" of others. Not only can he win incredible items through lotteries, but he can also directly enhance his magical skills! From magic immunity potions to instantly mastering profound spells, he discovers that Hogwarts is practically his personal "resentment ATM"!

Signas solemnly promised: I never provoke trouble, but if someone comes to me with their grievances, I will never hesitate to take action.

[You've successfully angered Snape and won the rare item 'Calming Potion' in the lucky draw!]

[You successfully tricked Professor Quirrell, gaining a large number of skill points and Levitation Charm LV10!]

You successfully pulled down Malfoy's pants...

You have successfully enraged Voldemort...

...

Hermione: Signas, that's incredibly disrespectful to the professor!

Ron: Hey buddy, you made Malfoy cry again!

Harry: Signas, how did you do that?

Voldemort: Damn it! Mudblood, what have you done...?

Signas: Actually, I really didn't mean to make you guys angry!

Roger traveled to the world of Harry Potter.

The game started on hellish difficulty; he became the apprentice of an old, powerful, and extremely temperamental dark wizard. Just as he was cautiously serving this unpredictable mentor, he unexpectedly discovered that the bio-computer he had developed in his previous life had also transmigrated with him!

From then on, Roger's magical training began with the three Unforgivable Curses! "Analysis of the Imperius Curse complete." "Begin observing Professor Quirrell."

Years later, when the Daily Prophet was preparing to write a legendary feature on Mr. Roger Lewis, prominent figures in the wizarding world spoke out:

Professor McGonagall (with a serious expression of amazement): "Without a doubt, Mr. Lewis is an unprecedentedly outstanding graduate in the history of Hogwarts." Dumbledore (his wisdom gleaming behind his half-moon spectacles): "I must admit that no one understood the nature of magic better than Roger. Not even the four founders of Hogwarts." Voldemort (in a complex tone): "It is well known that I made indelible contributions to Roger's magical research..."

Rita Skeeter (writing furiously with her quill pen, her eyes gleaming with gossip): "Mr. Riddle, was it the summer before Mr. Lewis enrolled?"

Voldemort (lost in memories): "Sigh...that summer, they invited me to participate in the experiment, though the method was crude...If they had said it was to develop an elixir of immortality, I could have provided tremendous assistance! I wouldn't have needed to go through the trouble of finding the Philosopher's Stone...I still deeply regret missing this opportunity to return sooner!"