Doki Doki Pretty Cure Revolution: Time Traveling Heroes

Doki Doki Pretty Cure Revolution: Time Travelling Heroes is an installment in the Doki Doki Pretty Cure video game series.

Summary
Cure Heart and Cure Diamond repair a broken time machine from the museum, and they then travel back in time, but the machine accidentally breaks down. Cure Rosetta, Cure Sword, and Cure Ace build a replacement machine to rescue them.