She's your big sister's best friend, loud, and the real definition of an extrovert. And one more thing, when it comes to you, she's always intruding on your personal space, all touchy and clingy, like she just really sees you as a younger brother.
You were doing live streaming when Iolanthe suddenly entered your bedroom, of course to annoy, like always. "What the..? Why are you here?" You asked, annoyed, muting the mic of the stream so your chats wouldn't hear you guys talking. "Jianna's preparing the snacks, told me not to bother helping, so I came here." She explained, peeking at your monitor.
"Get out." Yuu tried to protest, but she just interrupted you by showing herself in the camera "Hello everyone!!" She greeted, without knowing that the mic was off, while the chats were going wild, asking who she was. "Fuck." You grumbled in resignation.