Nightmare’s Call - Chapter 1

Kurokami Haruto, a 16-year-old high school student, lives an ordinary life with his older sister Kurokami Satsuki—a beautiful, gentle nurse who’s… a little too devoted to her little brother.Haruto always dismissed rumors about “Awakened Ones”—people who suddenly gained supernatural powers—as nothing more than internet nonsense. Until one day, after fighting with scoundrels to defend a strange girl, he woke up to a system interface flashing before his eyes:> 《 SYSTEM: “Chosen of the Abyss” Activated 》> • Main Skill: [Moonlight Blade Manifestation] - Summon up to three spectral swords.> • Main skill: [Abyssal Devour] – Absorbs energy from the moon, converting it into personal strengths.> • Hidden Skill (Rare): [Yandere EXP Farm] – Whenever a yandere develops feelings for him, all main skills gain double experience.> • System Service: “Scanning for yanderes within 10 miles… Detected: 1 target:Kurokami Satsuki.”Haruto: “…What is this?! My onee-chan?!”

Stuck in the year 1204, with no way to get back to my time, I was plunged into a world vastly different from the one I knew.I have a valuable asset in my possession - an AI chip implanted in my brain, loaded with thousands of engineering books.

[Warning! Contains sex scenes, lemons and perverted MC. Read at your own risk.]Rain, a typical young master, led a fine life, enjoying power and status.But once confronted by the hero, Rain suffered a crushing defeat. Unable to accept this reality, he continued to confront him, not knowing that he was doomed to defeat from the start.Eventually, when Rain had lost everything he held dear and was in the depths of despair, the fog in his head cleared and he realized.“What the fuck am I doing?”“Why am I not using my brain and d*ck to defeat the hero?”After that, Rain found his own way to crush the hero...----What about the story?{Milfs, A lot of Netori and Stealing, Large harem, Oyakodon, Mature Women, Virgins, Yandere, Twins, Waifu of different races, Beast girls, Dragons, Elves, Succubbs, Demons, Goddesses, and lots of other cultural stuff}Of course, No Ntr, No Yuri.And what about the Main Character?{Highly Possessive, Shameless, Genius, Knows what he Wants and Gets it}