One Piece: Dream of Immortality - Chapter 1: All for nothing

Cyril was a Harry Potter book fan. He unexpectedly obtained a chatterbox system that said it would take him to experience the desired Wizarding World.

He rubbed his hands together gleefully. Was there such a good thing?

However, once the system was finished, he found that this Wizarding World didn’t seem quite right?

Cyril (eyes shaking: Forest monster? Brass steam train? Gloomy wizard’s tower? Wizarding academy of the fittest? This wasn’t right!

System (forcing itself to be calm): Magic creatures! The appearance doesn’t matter! The architecture isn’t the key! It is still a wizarding academy! There isn’t anything wrong with it! Not bad, not bad!

Cyril struggled to make it through the Blackheart Wizard Academy. Fortunately, there was the gentle and courteous chief gentleman to cling to. This was until he found that the handsome chief seemed to be plotting against him…

My god! This seemed to the other identity of the crazy great magician and necromancer?

***

According to legends, the dark, paranoid, crazy and perverted great necromancer rubbed the white and delicate neck of the beautiful young man in his arms and whispered, “My dear, I heard that you have been very close to the commander of the Holy Light Knights recently?

Cyril denied it three consecutive times with an innocent face, “I’m not! I didn’t! Who is talking nonsense?”

- Description from Novelupdates

There are a total of seven sins, and a revelation is made to a young man named Alex that he is destined to become a demon lord, more especially a demon lord of sin called LUST.

It's not like he can change that and because he always knew something about himself was different—not in a physical sense, well, maybe a little—and not in a mental sense—but rather because he is thrown into a demonic war that compels him to accept his new reality.

He was only aware of a difference in himself. Relating to him and the ladies who are drawn to him... Well, it was more or less like he was a magnet in front of all the girls, and all the girls were drawn to him like a metal.

Hazel has spent most of her life picked on and bullied by the triplet, rich, and handsome soon-to-be Alphas of the Emberfang Pack, Lucas, Liam, and Levi Sullivan. ‘Adopted’ by the Alpha and Luna, Hazel works as a live-in maid and is subjected to their daily torture.As such, Hazel wants nothing more than to leave the Emberfang Pack once she turns 18 and pays off her debt. Only, never once has she expected to find her fated mate in her tormentors—the Sullivan Triplets.All three of them.Caught between the mate bond constantly drawing her to the three handsome alphas and the trauma of their past bullying, Hazel must make a choice.Will she let go of the pain and trauma and give the triplets a chance? Or will she walk away from the Emberfang pack and her fated mates forever?