My Reward System: Helping My Little Sister and Her Friends

When a mysterious system awakens that makes him stronger by helping others, an ordinary high school student discovers his life is about to change forever. Starting with his adorable little sister, he finds himself surrounded by female classmates desperately needing his assistance. But when even the beautiful teachers start asking for help, things get complicated fast. Every act of kindness unlocks new abilities—but can he handle the attention that comes with being everyone's hero?