Best Assassin Anime With Supernatural Powers?

I’m trained to do one thing: kill. I was put into a school where the concepts of love and forgiveness were treated as weaknesses. When I graduated, they told me I’d be lucky to survive; now I’m the best of the best and the person who gets the job done no matter what. I’ve assassinated Presidents, housewives, Navy SEALS and more shifters than I can count. I have more kills than anyone in my business, so when a new order comes in to kill Alpha Gideon, I take it without a second thought. ​He’s a job like any other, but during my scouting, I see something I’ve never seen before. Alpha Gideon isn’t a tyrant or a bully; he’s kind to his Pack. I start asking questions, which is when everything goes to shit. My signal is found, and for the first time in my life, my target has me in his sights. I expect pain and maybe even death, but Alpha Gideon treats me like a welcomed guest; his warmth and kindness open up something inside of me that I didn’t know I had. I should kill him before he changes me completely. I tell him I’m cold and heartless, and he laughs. Loving a mark has never been done, but no matter what I do, every touch sets me on fire and with each longing glance, my past becomes a distant memory. I’m ready to put everything I was aside to stay with Alpha Gideon when the call comes in; my fellow assassins have been called. The bounty on Alpha Gideon has been doubled. I have two choices: protect the man who has opened up my heart or kill the target and get the job done.

Mayari Alverno is an assassin in her world of blood and death. Even though she longed for a change, she couldn't break the shackles of slavery that bind her to her ruthless father that repeatedly abuse her until she drop dead. Unexpectedly, a powerful sorceress from another world, named Helen, came to her aid and offered her an apprenticeship that she couldn't turn down. Mayari now lives with the sorceress in the world that she haven't dwell, a world of magic and mystery that never failed to amuse her. But peace is a fragile thing that can always be broken easily. Even though in a new world and a new life, troubles are always looking for Mayari that includes her being eyed by the dark forces of magic because of her outstanding ability, and involuntarily being knotted by the Royal Family's problem, risking her life a couple of times to death. Will she regain peace in the end? or be thrown in hell to repent for her sins?

Shanra Croft joined the Black Assassin's Squad so she can find the killer who murdered her whole family. She became the best assassin and is well-known as "Silent Assassin." It's because all of her victims died silently and in a peaceful way. She meets her childhood crush, Craig De Silva, who is now a police team captain and has a mission to capture her alive. What if Craig discovers that she is the assassin that he'd been looking for? And what if she discovers that the murderer she'd been looking for a long time is just beside her and that person is the one she trusted the most?

She was sent to kill him. But fate sent her to love him. Elena was bred to be an assassin—deadly, precise, unstoppable. The best the underground world has ever seen. For her, emotions are a weakness, and failure is not an option. But everything changes when she’s assigned a mission. She expects another clean kill. What she doesn’t expect is to be caught. Kidnapped. And forced to live with the very man she was sent to destroy. The worst part? He’s her mate. And he’s not letting her go

Ito Akihiko the main protagonist also called as the 'cursed child' due to a past incident has the ability to see spirits from birth. To save the world from turning into something inhumane Akihiko and his comrade Asato Ayame venture through the world with spirits and creatures from stories, myths, rumours and even legends! Will they be able to change the future that lies ahead of them? Well, find it out yourself...

To kill is to live. Elena has been living by that principle since she was fifteen, when she was disowned by her parents for the sole reason that she was not a son who could continue their family's legacy. The night she was thrown out, she was chased by a pack of wild hybrid dogs down the woods, and almost died if not for the help of Henry. He brought her to the House of Spades, an infamous guild of the most priced assassins. Even after knowing what place she was into, Elena accepted the offer to be an assassin. She wants to prove to everyone, especially to her parents that as a female, she can be a strong and skilled fighter that could equal a man. Blood flowed from her hands the moment she learned how to use sword. Now that she's nineteen, she's ought to do the biggest mission she ever had: To kill the Raven Pack's Alpha. She had everything planned for the big night. She will kill the Alpha at night of the pack's celebration when everyone is most likely distracted. However, when she went to the Alpha's chamber that night to slaughter him, she was surprised when the Alpha was anticipating her arrival, calmly sitting on the bed, eyes gold and blazing. Elena didn't want love in her life, let alone love. That's why when she wasn't able to resist him on that one night, she's willing to move mountains just to avoid him. They met in the city again, but this time she was filled when regrets when Rage died in front of her. A hundred years later, they were reincarnated as normal people in human world and had completely forgotten about their past life. Will they have their happy ending this time?