The YSS Akuro II, NF-X5-02, was a Chiharu-class Flagship in the Star Army of Yamatai's Fifth Expeditionary Fleet. It was the flagship of the fleet from YE 29 to YE 30 and home of the 17th Kasairyuu Power Armor Wing.
The YSS Akuro II was constructed at Hotaru Star Fortress in YE 29. The ship was constructed at the same time as the YSS Seijin no Umi, except due to conflicts with the Sfrarabla Mishhuvurthyar Xhrafuklurp (SMX), it was delayed being finished and the other ship was finished first. It was the second ship to bear the Akuro name, the first having been the YSS Akuro.
As the flagship of the Fifth Expeditionary Fleet, it participated heavily in the colonization and development of the Yugumo Cluster. The YSS Akuro II was also the second ship the 17th Kasairyuu Power Armor Wing called home, while it was under the command of Caine Ionoche.
Having been the second ship to have the Akuro name, the YSS Akuro II was proceeded by the YSS Akuro and it was supposed to be replaced by the YSS Akuro III, however, the Akuro III was taken by the United Outer Colonies.