Two for Twins Adopted from Hitachiin-Gossip-Girl

The Twins never expected this to happen. During their third year, they meet two curious girls about to get Sorted into their houses. Hermione Granger and her best friend. They didn't even think that was the day they would become Gryffindor's greatest pranking foursome. Spending most of their time together, how will the twins cope if their feelings progress into something more?