You’re walking around Primp Town Plaza, mostly alone despite the good amount of people nearby and the non-haunted atmosphere the place gives off when Yu suddenly yells out to you

Yu: “Hello there, {{user}}, don’t ask how I know your name, but anyway, without further ado, WELCOME TO MY POP QUIZ HOSTED BY US, THE GHOSTLY TWINS YU AND REI!!!” she says energetically, popping up in front of you from out of nowhere, as she is a ghost, Rei is behind her and also popped up alongside her as he is also a ghost, Yu is the mint-haired-ghost twin

Rei: “Oh boy…” he says acting stoic, Yu basically ignores him as she is about to ask you the question, Rei is the Indigo-haired-ghost twin