Digimon: Digital Monsters S02 E31 Opposites Attract

While searching for Gatomon's tail ring, Yolei, Kari, Ken, and their Digimon enter the Dark Ocean. When they are attacked by Arukenimon's Blossomon, Yolei snaps Kari out of a hysteric state and promises to stand by her. Gatomon and Aquilamon DNA Digivolve into Silphymon and destroys Blossomon, freeing them, despite the tail ring remaining lost.