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1. The World Isagi Doesn't Want to Know by tsuna (Alpha_Ze)

   Fandoms: Blue Lock (Manga), Blue Lock (Anime)  

   • Mature
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   27 Dec 2025

   Tags

   • No Archive Warnings Apply
   • Isagi Yoichi/Everyone
   • Bachira Meguru/Isagi Yoichi
   • Kira Ryousuke/Isagi Yoichi
   • Chigiri Hyouma/Isagi Yoichi
   • Isagi Yoichi/Kunigami Rensuke
   • Barou Shouei/Isagi Yoichi
   • Isagi Yoichi/Mikage Reo
   • Isagi Yoichi/Nagi Seishirou
   • Isagi Yoichi
   • Isagi Yoichi's Parents
   • Bachira Meguru
   • Chigiri Hyouma
   • Kunigami Rensuke
   • Kira Ryousuke
   • Barou Shouei
   • Mikage Reo
   • Nagi Seishirou
   • Alternate Universe
   • i think
   • Isagi makes a contract with a demon
   • Falling In Love
   • to exorcise inner demons
   • System
   • Crack
   • Unintentional Harem
   • or rather
   • system sanctioned harem
   • don't take this seriously
   • Angst(?)
   • dark themes
   • Possessiveness
   • Obsession
   • Jealousy
   • I was wrong
   • it's getting serious
   • DEMON system

   Summary

   Impulse ruins lives. Isagi makes a simple mistake that leads him to accidentally accepting a contract with a mysterious System.

   The mission: to purge the world of demons that have made their homes in unsuspecting hearts–filling them with darkness and sucking their life. Should Isagi refuse, due to having accepted the contract, his soul would be immediately harvested.

   Isagi: Why me?

   System: Simple! Isagi-sama has the highest compatibility rating with the capture targ–AHEM–possessed victims.

   Isagi: …

    

   OR

    

   Accidentally formed a contract with a demon and now I'm forced to rid the world from demons by... creating a male harem?!?!?^TM

   Language:

   English

   Words:

   26,628

   Chapters:

   6/?

   Comments:

   119

   Kudos:

   492

   Bookmarks:

   66

   Hits:

   6,665