Some things are thicker than water. Kwak Jahyung lives his life surrounded by hot women - too bad they just happen to be his sisters, as his playboy father has more children than he can count. But boys will be boys, and Jahyung is no exception. After his older sister Hanna gives him a potion meant to screw him over, the two find themselves in a sticky situation that goes to show family can be closer than you’d ever imagine… (Source: Lezhin US) 
Note: Includes three extra chapters.

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