Kyusei Sentai Wakuseiber Special Episode 4

With the new Yellow Sun fully integrated, the Wakuseiber team confidently heads into battle against the Liberio commander, Dora. Though they manage to defeat Dora in her standard form, she is quickly resurrected and turned into a giant, forcing the team to summon Wakusei-Oh. Tragically, the rangers are overwhelmed when two more enemy generals suddenly grow to giant size to ambush them, leading to Pink Earth being captured and taken to the villain's lair. (Source: MyDramaList)