NTR: I became a noble? - Chapter 7: Ambush on old man

Flatten the Devil's Palace, eradicate the demonic cult, slaughter the demon lairs, sweep through the demon realm, dominate the heavens and earth, control the three realms, be the supreme master of the mysterious sect, master of the Nine Yin, the 17th head of the North Star Sword Sect, the Heavenly Fiend Lone Star, the Supreme Sword Soul, the Supreme Infinite Mysterious Heavenly Wishful Great Sword Patriarch... Also known as Iron Egg, known for the wild history of relentless killing.

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

The old man pointed to the flower-like woman and said, “Call her mother from now on.” He then pointed to a flower-bud-like girl and said, “This is your sister.”

My younger sister was not cute.

She was arrogant, taciturn and weird, but she knew how to please our parents.

She was two-faced and deceitful, but it seemed like she only treated me that way.

I cared for her, tried to please her as much as I can, but she still disliked me.

Until one day, I found out her secret, our relationship began to get a little bit weird…

- Description from Novelupdates

Living in Tokyo, using the Mind-reading Extraction Skill, I thought I could become an all-powerful superhero, but instead, I got dragged into a twisted cycle of love?! Without even a moment to mourn my youth, the one who immediately rushed to the battlefield was— Kiryu Hina (ex-girlfriend), “Remember, this is what you owe me.” Ayakoji Chiyoko (current girlfriend), “Break it off with that woman immediately!” Kohinata Motoyo (rough target), “Please, I’ll do anything!” Ai Cheng Hua Lian (always losing), “Huh?” Kagura Hikaru (protagonist), “...........” My youth romantic comedy can’t possibly be this twisted!!!