The Strongest Mortal Breeder – Level Up by Raising My Junior Sister

I got picked up by a wandering fairy master and just wanted to hide in my yard, relying on my one and only cheat—a 1cm-per-day invincible zone—until she came back. Then I found out that feeding my new junior sister a single drumstick makes that zone expand by 1cm. So I became a mortal who raises monsters. Lu Ming is 100% mortal. No spiritual roots. No cultivation. No talent. His only saving grace? A small courtyard where an invincible domain expands by exactly one centimeter every day. His plan: lie low, do nothing, and wait for his fairy master to return from her travels. Then the sect dumps a "trash" junior sister on him—Lin Qingyao, the girl everyone gave up on. And that's when he notices: Feed her a chicken leg → domain +1cm. casually correct her breathing technique → domain +1 meter. Let her sit on his broken old chair → it literally turns into a cultivation artifact. Lu Ming has an epiphany: raising his junior sister isn't a chore—it's the fastest leveling path in existence. So he goes all in. Roasted chicken legs become "enlightenment pills." His nonsense ramblings become "lost scriptures." The abandoned fiancée he takes in? Becomes the number one alchemist of the Eastern Wasteland. A random snake demon he feeds leftovers? Becomes the ruler of the Myriad Beast Mountains. And Lin Qingyao, the so-called waste? She becomes the sect's undisputed genius. Then one day, his wandering master Su Hanyi finally returns. She pushes open the courtyard gate—and finds a yard full of legendary figures, all standing at attention, all bowing to her as "Grandmaster." She freezes. Points at Lu Ming. "Wait... disciple, are you telling me all of these monsters are under my lineage?!" — 【Multi-FL】＋【Misunderstanding Comedy】＋【Invincible MC】＋【Casual Power Progression】 Everyone thinks he's a hidden supreme being. He's just a mortal who feeds people really, really well.