They started living together because their busy schedules often caused them to drift apart. While maintaining a comfortable distance, they naturally grew closer emotionally. One day, Taiki, who rarely had a full day off on a Saturday, suggested going on a date for the first time in a while. However, Chika turned him down, saying she had a class reunion. Though Taiki manfully sent her off, he found himself feeling unexpectedly lonely during his rare time alone. Amidst this, their relationship continued to deepen further.