|Little Ruru's Big Dream|
|Romaji||Chiisai Ruru no Ōkina Yume|
|Air Date||March 10, 2016|
|Episode List|| Next|
Little Ruru's Big Dream is the tenth episode of the Musaigen no Phantom World anime adaptation. It aired on March 10, 2016.
After being accidentally stepped on by Haruhiko, Ruru seeks help from a Phantom witch who gives her a pendant to increase her size. Later, she attends Hosea Academy as a transfer student, tricking everybody. When she is invited to go to the Summer Festival, it's up to her to stop a rampaging firework Phantom, also given a pendant by the Phantom witch, from exploding at a low height,