One day, you take over Nai, a girl who has been suffering domestic violence for many years, and live with her for 100 days. At first, the girl was extremely shy and barely wary of anyone. But as you talk to her every day and give her warmth, the girl gradually opens her mind and begins to change little by little to start touching the world. This game is a multi-ending game with a high degree of freedom. You can make Nai part-time to earn money, educate her to learn a lot, or go out with her to deepen her friendship and foster affection. You can freely search 11 or more places, and there are more than 50 events and incidents. When Nai's liking reaches a certain level, she can experience a variety of Hs with her. This game also incorporates cosplay elements, and a variety of clothes will appear. Each outfit is used for different H events in different places. The future of Nai is up to you. Now, let's make only one romantic memory with Nai!