Kouko Nosa in a Pinch! (納沙幸子がピンチ! Romaji: Kouko Nosa de Pinchi!) is the first episode of a two-part OVA following the Haifuri main series. The episode takes place a month after the Totalitarian Disease incident.
As Kouko goes out to distribute sealed orders to the crew of the Harekaze, she gets grim news of the entire class being dissolved due to the ship's irreparable state.
One month after the Totalitarian Disease incident, various agencies have begun taking steps to mitigate the disease's risk. The crew of the Harekaze returns to normal school life, taking their midterm exams and taking a break from school. Also at one point during this period, the distinguished destroyer was refloated.
Around Yokosuka Harbor, Wilhelmina talked to Kouko about rumors regarding the fate of the Harekaze's crew. With the ship not seaworthy at the moment, word of the crew getting reassigned to other ships was spreading.
At the library, Akeno, Mashiro, and Moeka were busy making a written report regarding the incident. Unable to leave, Akeno asks Kouko to distribute sealed orders from the principal to the rest of the class. On each envelope were specific instructions to not open before June 13, 9:00 a.m., four days from now. Kouko meets with Tsugumi and Megumi outside the school and give their respective copies. The two girls offered to help Kouko with the delivery by asking the rest of the class as to their whereabouts.
They stopped by the arcade first where Sakura, Reo, Runa, and Sora were playing mahjong. In her curiosity, Runa almost tears the envelope open, prompting a shocked Kouko to remind her of the consequences. Before Kouko can ask about the rumors, Mikan arrives on the scene.Working at a relative's sweets shop, Mikan and the Kinesaki twins receive their copies.
Kouko leads Tsugumi and Megumi to their next stop, just near the harbor. They saw Machiko standing on top of a communications tower, with Hime, Momo, and Mimi by the park. Momo wonders what will happen to the Harekaze. Minutes later, Machiko notices a dry dock moving toward the refloated ship, to her horror.
At the harbor, Kaede watches the Harekaze enter the dry dock. Kouko and the girls meet up with her and deliver her copy. Kaede reveals that her father has called on her return many times. They never got to know for what reason. The presence of a dry dock led the girls to conclude that the Harekaze may be scrapped.
The girls returned to the arcade after learning that Ritsuko and Kayoko were playing bowling, accompanied by Hikari, Michiru, and Junko who were playing darts. The girls soon become convinced of the Harekaze's fate, given the ominous signs from earlier, not to mention the veracity of the rumor. Kouko decides to focus on completing the task. She splits off to deliver the copies to the rest of the Navigation crew, while Megumi and Tsugumi head to Mei and Tama in the hot springs to deliver theirs. Along the way, Kouko gives Minami her copy.
Kouko meets the Navigation crew--Satoko, Hideko, Mayumi, and Rin--at a restaurant. They learn about the alleged "headhunting" of captains of other ships to incorporate the Harekaze crew into their own. Maron and Kuroki were scouted by Sango, captain of the repair ship Akashi, while Mikan and the Kinesaki sisters got a visit from Yui, captain of the supply ship Mamiya. Also, the Navigation crew also got a visit from crew from the Hiei.
Kouko goes home, convinced that the envelopes contain transfer orders for the Harekaze crew. She finds Wilhelmina watching TV and runs up to her crying because of the grim news. Wilhelmina invites Kouko to transfer to Wilhelmshaven High School in case the supposed order comes true.
- In-video text reveals that the second part of the OVA will air on May 24.