I Became the Must-Have Character of the Academy City - Chapter 14: Spider Lily Bookstore

Akira Kisaragi traverses into the Bleach world, unlocking a check-in system.He initially thought that by checking in daily, he could become stronger, soon become the Captain-Commander, join Division Zero, punch Yhwach, kick the Soul King, and marry Unohana...However, the system's style wasn't quite what he had imagined.〈 Check-in complete, obtained Genryūsai Yamamoto's secret roasted sweet potato! 〉〈 Check-in complete, obtained exclusive attribute: King of Normal Attacks, effect... 〉〈 Check-in complete, obtained Retsu Unohana's... 〉Akira's eyes suddenly lit up!“Seems like this might not be so bad after all!”

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.

In a tyrannical world, what is evil? What is benevolence? All living creatures are brutal. Passing through the heaven road to find one’s purpose in life. Struggles to be stronger is not an easy path. The whole journey thistles and thorns, one blade chops open a path, I alone will be supreme!

- Description from Novelupdates

Sam unexpectedly acquired a dating simulation game named “The Female leads Truly Loves You”. He was quickly captivated by the game, which featured numerous beautiful female leads.Crucially, it was a harem-style game where the mc could maintain romantic relationships with various female leads and engage in sexual relations with them.Just when Sam thought achieving sexual relationships with these female leads was the game's goal, the ending shocked him profoundly.When all the female leads discovered the male protagonist's love for multiple girls, they exhibited inexplicably insane behavior.True to the game's title, “The Female Leads Truly Loves You”, each one wanted to possess the male lead exclusively. The crazed female leads resorted to extreme measures, killing the male protagonist.They dismembered his body and preserved it in formalin.They decapitated him and kept his head by their pillows to accompany them in sleep forever.They drained his blood to create a specimen, ensuring they could see their beloved male lead every morning....Realizing his fate would be death, Sam chose to avoid these female leads. However, they seemed to possess magical abilities, always finding him using various means.Fortunately, Sam had a system. By thoroughly conquering these female leads, he could avoid the deadly ending and even gain enhanced abilities.