GiganticBlackCat

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. 

Haruka’s beauty and charm made her the center of attention, quickly becoming the school's prima donna. 

But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically.

Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. 

However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. 

Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible.

This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. 

From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. 

His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

Netori: I Shall Steal All Of My Enemies' Women For Revenge!

Haruto's eyes widened. Part of him wanted to go, if only to better understand Shiruko's connection to the Yamada family.

But another part, the part tethered to reality, reminded him of Haruka.

"I appreciate the offer, but I need to be somewhere else," he said, his tone smooth yet firm.

Shiruko's dark eyes lingered on him, her faint smirk unsettling.

Unlike Zenzai, whose expressions betrayed his every thought, Shiruko's face was a mask of calm, revealing nothing.

"Well then, Akane's boyfriend," she said, her voice lilting with subtle amusement, "I do hope we meet again soon."

Haruto offered a polite bow and turned away, his strides quick and purposeful.

As he moved farther from them, unease settled deep in his chest. His thoughts turned to Haruka, and a sudden urgency gripped him.

A Really Dangerous Person