He is an Ensign in the Earth Federation Forces recruited to pilot the RX-78GP01 Gundam "Zephyranthes".
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Kou is first seen in a MS-06F2 Zaku II F2 Type having a mock battle against a RGM-79C Powered GM, so as to test the limits of the new GM, with Kou complaining about the Zaku's poor mobility. He and the other test pilots are easily defeated and return to the base, where they see the arrival of MSC-07 Albion, with Kou noting its similar classification to the MSC-02 White Base and thus getting excited at the idea of a Gundam being on board the ship. Kou and his friend Chuck Keith sneak aboard, and Kou is left awestruck at the sight of and. Attempting to get closer to the Gundams, he is stopped by Nina Purpleton, the engineer of the Gundams, who scolds him.
When Zeon ace pilot Anavel Gato and his team infiltrated and stole the RX-78GP02A Gundam "Physalis", Kou noticed the theft and, against orders, got in the RX-78GP01 Gundam "Zephyranthes" and piloted it to stop Gato. Kou engaged Gato in the GP01, but due to Kou's inexperience and Gato's expert piloting ability, Gato fights off Kou and escape with the Physalis.
Despite his defiance of orders and failure to stop the theft of the Gundam, the senior Federation officials were impressed with Kou's piloting skills and chose to appoint him the official Zephyranthes pilot. Kou was then assigned to Lt. South Burning's team aboard the Albion to assist them in their mission to either recapture or destroy the GP02 and stop the Delaz Fleet from commencing Operation Stardust. Kou also starts a rough and uneasy relationship with Nina Purpleton, an Anaheim Electronics engineer who designed the GP01 and GP02, who was also assigned to the Albion for further studies of Unit 01.
While the team are heading to Von Braun, Kou impulsively takes the GP01, which was not modified for space combat, out to battle Cima Garahau and her fleet, which were allied with the Delaz Fleet. This led to the GP01 being critically damaged in combat, necessitating it be taken to the Moon to receive a massive upgrade from Anaheim. Kou is later delivered the modified Gundam, the RX-78GP01-Fb Gundam "Zephyranthes" Full Burnern, which he would use against the Mobile Armor MA-06 Val Walo on the Lunar Surface.
The Albion and Kou later battle the Cima Fleet once again, but during the engagement Burning is killed by Cima, leading to Kou developing a grudge against her. For defending Admiral Green Wyatt during the fight, Kou is promoted to Lieutenant Junior Grade.
When the Albion is assigned to patrol the Shoal Zone during the Federation's Naval Review, Gato strikes again with a team of Rick Doms. During the attack, Gato fired Unit 01's nuclear warhead and damaged two-thirds of the Federation fleet. Kou then fought Gato in a duel that left both Unit 01 and Unit 02 damaged beyond repair. The Albion heads to Anaheim's La Vie en Rose station in order to pick up the Gundam Unit 03 to continue their pursuit of the Delaz Fleet.
After arriving at the station, the Albion crew are told by Major Nakohha Nakato that they have been assigned to protect the La Vie en Rose instead of continuing to chase after Delaz. However, Kou defied the order and stole the RX-78GP03S Gundam "Dendrobium Stamen" with help from the Unit 03's chief engineer Lucette Audevie. Kou then went out to engage Gato and stop Operation Stardust, which was revealed to be a colony drop on the midwest where a large chunk of the Federation's food reserves were. However, Kou firsts attacks Cima Garahau, and defies orders not to engage her. Despite Cima actually spying for the Federation and being the one responsible for personally killing Delaz, Kou attacked and killed her anyway to avenge Burning's death.
Kou then moves to fight Gato in his AMX-002 Neue Ziel, but Kou's battle with Gato is interrupted when Bask Om fires the new Solar System II at them. They both survive the blast but Gato gets away and is able to steer the colony towards Earth. Kou attempts to stop Gato, but is foiled when Nina Purpleton fires at him to get him and Gato to stop fighting, revealing she and Gato were once lovers. Because of Nina and Kou's actions, Operation Stardust is a success and the colony impacts North America.
For his defiance of orders, including killing an ally to the EFF, theft of the GP03 and failure to stop Operation Stardust, Kou Uraki is sentenced by a military tribunal to a year of hard labor. However, when the Federation later decides to cover up the Gundam Development Project, Kou's rank is reinstated and his sentence is removed to prevent any suspicions from arising.
Kou is released from prison and sent to North America's Oakley Base, where he meets up with Chuck Keith and later comes face to face with Nina and Mora again.
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Anti-Earth Union Group