In Kishiryu Sentai Ryusoulger Ep. 21: The Kishiryu of Light and Darkness, Kanaro and MosaRex suddenly detect a massive energy source heading to Earth, as they head to determine the cause of its origin. Meanwhile, there is a strange phenomenon going on where several plants and animals are suddenly disappearing, all while those individuals who should have died several years ago are now being resurrected from the dead! Kou and the others discover Ui’s mother has come back to life, and also Master Pink as well! But the Ryusoulgers also start to feel very uneasy and cautious, as they discover a revived Tankjou standing before them!