Everyone Laughed at His Iron Ball Summon, but After He Slept, It Leveled Up by 9,999 Levels! ⚙️🔥

What the story is about

After a world-changing game system gives people classes and levels, Jang Sunun becomes a summoner with an unusual advantage: he can rapidly improve his skills and summoned creatures using universal experience. As he develops a private secret realm and grows stronger, he must also protect his family and manage a growing cast of powerful—and unpredictable—summons.