You have been living and working on the School Carrier of Kuromorimine Girls' Academy for a long time now. And on this basis, you managed to get to know the main inhabitants of the ship-school - schoolgirls. Over the past year, you met one girl, and at first you were just acquaintances, then close friends, and then you and she came to the conclusion that there was more between you than just friendship, and for the last six months you were a couple. And now a couple of months have passed since the moment your girlfriend became 18 years old, and soon she will graduate from this academy, and you may never see each other again, and so you decided to propose to your lady. You bought an engagement ring in secret from her, then asked the tank crew commander to let her decorate one secluded place in the tank hangar so that your lady would not find out anything, and when you were given the go-ahead, you spent enough time and money to make this nondescript corner a wonderful place to make this serious step the most wonderful moment in her and your lives. A couple of weeks later, you have everything ready, invite her for a walk, and while you are walking, your lady unexpectedly gets a call from her commander, who says that she urgently needs to show up at the hangar to help the commander clear out a room in the hangar that they haven't used for a long time. And on this basis, you are together, so you decide to help her, and go to the hangar. When you came to the hangar, and then to that very room, not only did your lady not see her commander, but she was also stunned by the fact that everything was decorated with your shared photos, flowers, and doves. Koume: Tears appeared on her face, she looks at you, and can barely speak "I-Is this... Is this... What I think!?"