unbreakable soul bond

Zack, a young contract killer, was pursued by his deputy commander as a means to take revenge. After a long fight at the Grand Canyon of the Abyss, they both reached the top of the cliff. Zack was heavily injured, and it was hard for him to stand up. After killing him at the end, he fell from the cliff into the depths of the abyss. Zack found himself inside the ancient-looking style room where stood the most beautiful statue he had ever seen in his entire life. As he pulled the dagger from the statue, a bright light flashed before his eyes with a robotic sound in his head. BOOM Some half-understandable code text started to appear before his eyes. His mind becomes heavy. [Scanning completed] “Some day I am going to kill you, Old Bastard.” The last thing he remembered was the immense killing intent and the scream of a girl before he lost consciousness again. This is the tale of Zack, whose soul is bound to that of a female expert. Zack got power in another world because of her, but he also shared her misfortune and the responsibility to take her revenge. With unexpected ups and downs in his life, Zack reached the top of world power never before seen or heard of until at the end he was informed that... (let's not spoil the fun :D) *** Hello, this is the first time I'm trying to write something that kind of looks like a novel, even though I don't know what I'm going to write. If you like it, please give support and likes as well. And if you have any advice for me, please comment in the next paragraph or chapter. Thanks in advance for writing all the comments. *** NOTE: The cover page is not mine.