Yumi pointed her finger at the girl and moved it back and forth. "Tsk, tsk, tsk. Now, now, you realize that pranking isn't only a Slytherin thing, don't you?" she asked the girl in a sort of teasing voice. She wasn't lying about that. There was always one of two people in each house that liked to prank others. Sure there were just a tad more of those prankster in Slytherin, but that didn't mean that the other houses didn't have any students like that.
"I know who you are. One of the famous D'Eaths, seems the lot of you are just running around wild in this school. Is having children your father's hobby or something?" she asked, more curious than teasingly. "I knew your sister, Alexis I believe her name is? She was a prankster too, if you didn't already know that. Which I'm sure you do. And a fine prankster she was in this school, among others. As is your younger sister, the Gryffindor. She enjoys pranking as well, though she only does it a few times." Yumi smirked at the girl. The brunette knew a lot about the pranksters of Hogwarts, or about most of them anyways.
The seventeen year old exchanges a glance with the Hufflepuff boy and she nodded in Lily's direction. The boy seemed to understand what Yumi was telling him to do without need for words and he walked up to the girl again. "Why don't you join us, instead of being here all alone? There won't be any pranks if you don't want there to be, since you don't like them." he told the girl. Yumi knew that was a promise that would be hard for her to keep, as pranking was basically her life. Or it had been for as long as she could remember.