In This Life, The Greatest Star In The Universe - Chapter 23:

Hogwarts is a strange place. The demon king who failed plastic surgery was eliminated from the job search. The white-haired old man wearing two layers of wool socks is still too cold in summer. The potion professor who never washes his hair is afraid of going bald, and the key keeper loves to play dragons!

William wanted to spend seven ordinary years, until that night, the door handle of the college lounge was stolen…

(Book Friends Group Number: 605848137)

- Description from novelbuddy

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

Through the pirate world, I can resurrect the dead and get one of its abilities.

It is said that pirates are immortal, I want to see, in addition to Roger, which other unlucky person has been written to death.

Luffy: “My brother is dead, I never won a game against him when I was a kid.”

Zoro: “My girlfriend died, and I never won a game against her when I was a kid.”

Sanji: “You still have a girlfriend? Ah, my mother died of illness.”

Usopp: “My mother died too.”

Nami: “It’s good to die, my mother was killed.”

Robin: “It’s okay, my mother was killed too.” Everyone: “???”

Whitebeard: “Zefa, I didn’t expect you to die. I was killed by your disciple. My son made up the knife. Who killed you?”

Zefa: “I was killed by my disciple! Let’s go get revenge together!”

Whitebeard: “Yes, but let’s fight first!”

The most chaotic confession in the pirate world..

- Description from novelbuddy

It’s been 10 years since I found myself in the game “War of Gods: Infinite Defense.”From being the illegitimate son of the Red Dragon family, I rose to become a prominent figure, but under my half-brother’s schemes, I eventually met my demise.[Game over] [Hidden Ending: The Secret of Ray Hatzfeld]However, I was given another chance.[Discovery of the hidden ending has unlocked a new story.] [Additional content is being downloaded.] [The story of Kane Rehinar, the Grand Duke of the Water Tiger family, begins.]Not as the illegitimate son of the Red Dragon family, but as the Grand Duke of an enemy nation!“Hatzfeld, this time I will make sure you die in the most painful way possible.”