Davis is always getting into trouble about his intense jealousy towards anyone he sees as a rival for Kari's affections, not the least of whom is T.K., even calling him by the wrong name (in the Japanese version, Davis actually calls T.K. by his proper name). A little later, Davis was playing in a soccer match against the famous Ken and injured his ankle in a tackle. In retaliation, Ken (as the Digimon Emperor) had Davis degrade himself, threatening to feed the DigiDestined to Deltamon. However, the real DigiDestined appeared, revealing the deception. Ken vows to take over the world, but Davis tackles him in a scuffle. During the fight, Davis recognizes a familiar cut on the Emperor's leg. Defeated, Ken reveals that he is the Digimon Emperor and flies off.
During the final battle with Kimeramon, Davis attempted to locate the engine room and was led there by Wormmon, who was equally determined to save Ken from himself. Davis discovered that the base's power source was the Digi-Egg of Miracles, which he used to Armor Digivolve Veemon to Magnamon. When Davis unlocks the egg, Veemon notices that a crest is inside of it, which is later revealed to be Ken's Crest of Kindness. Although Magnamon is powerful, it is only when Wormmon sacrifices himself that he has the energy to defeat Kimeramon. Davis and the others finally make Ken realize that Digimon were real, living things, not just computer data.
By the year 2027, Davis achieves his dream to open his own noodle cart and it became a huge success. There are now "noodle noodle come get your noodle" carts all over the world. His entrepreneurship earns him a place on magazine covers around the globe. He is wealthy, married and has a son, who looks exactly like his father, inherits Taichi Kamiya's goggles, and has a DemiVeemon.