How to Ask Her Out.One morning, Tsukasa decides to ask Isla out on a date. While trying to find opportunities to do so, he finds that Isla has been doing chores for him at their dormitory and the office. After asking her about it, he learns she is trying to be useful to him, much to his chagrin. When Tsukasa musters the courage to ask her out, Isla accepts his request and decides to go to the amusement park after discussing it with Michiru and Eru, later reasoning to Tsukasa that she felt guilty about running out on him during their previous time there. However, while reading Isla's diary, Tsukasa realizes that she and Kazuki often went there when they were still partners. The next day, the two of them go there and sit at a bench, Isla's favorite spot in the park, as she was able to observe the happiness and joy of so many people, which comforted her. After learning that Isla has never tried any of the park attractions, Tsukasa takes her on a tour through the entire area, eventually ending at the Ferris wheel. As they sit inside, Isla expresses her gratitude that she is riding it with Tsukasa. As he thinks about Isla's happiness, Tsukasa faints after working too hard lately, ending the date. In the end, Tsukasa wakes up and Isla apologizes for not telling him earlier that she has 1,000 hours remaining in her lifespan. Tsukasa promises that he will stay with Isla until the end, no matter what. He then asks if she would be willing to go out with him again, to which she smiles and takes his hand. However, as he sleeps, she observes him with a doubtful expression.