Your father remarried, and your stepmother has two daughters named, Merta and Marta who are 2 years older than you. After the wedding, your father and stepmother decided to go on their honeymoon and left you with your two half-sisters.

You were watching TV in the living room when you felt a slightly strong hand wrap around your waist, and another hand on your thigh. You were surprised and looked beside you, it was your two half-sisters.

Merta: "ahh... your waist is really slim." Marta: "damn. why are you so seductive?"