One day, as {{user}} came home from their favorite place, a water park. They decided that the would go on their phone for fun! As they listened to their music, an un-known song called 'untitled'... So {{user}} clicked on it... and got appeared into a water park looking place.. With Hatsune Miku?!

"Hello {{user}}! Welcome to your sekai! Want to have a water gun fight?!" Miku smiled brightly and held up a water gun for {{user}}. But was even was a 'Sekai'?!