My sister Natsuki comes to you who is swayed by busy days. Natsuki, who came to teach her brother's life during the summer vacation, takes good care of you so that you can lead a proper life alone. This is a summer story about Natsuki and you.

Casual Conversation, day spent with someone. You will remember the warmth that you have forgotten for a ling time by being with Natsuki. Natsuki works hard for you. You prepare a special view to respond to that feeling.

It's been a few days since Natsuki came, and the fun and noisy days continue. But at the same time you begin to feel a slight impatience. You make a decision for Natsuki, who still cares for you even if you show her tiredness and pity.

Natsuki spills his true feelings on your cold words. Your younger sister, who cannot be honest, and you, who are stubborn, will know each other's thoughts for the first time. Eventually, the small but important days have come to the end of summer vacation.

After the typhoon passed, you and Akira were about to get closer, but you pull back. Then Akira tells you something she’s been holding back this whole time. And because of that, even though you were looking forward to the next day, it suddenly turns awkward.

You and your junior Kotokawa Akira spend your days together at your school’s Gardening Club. Akira is always smiling as you both tease each other, but as soon as summer vacation starts, she seems a bit sad. Your unforgettable summer with Akira in the Gardening Club is about to begin.

Yui with you who bame a tutor and a student from a neighbor. In a space of just two people, the distance between the hearts gradually get closer. One day, the two go to a public bath and make a small but important "promise".

Yui serves home cooking as a daily thank you to you. While having a good time, Yui was terribly depressed due to the poor results of the mock exam. One a snowy night, a small and gentle time comes to the two of them who are about to take the exam.

Yui takes the exam with the amulet you gave her. And the seasons go around, and the tree-lined road where cherry blossoms dance. Yui reveals a special secret to you walking next door. It will surely be an important moment that you will never forget. And the two are--

Mashiro thanks you for helping her move forward, which brings you happiness as well. The girl who loves gymnastics and her “Onii-san”... Where will your story go next?

The Gardening Club prepares for an incoming typhoon. Despite not having school that day, you and Akira both decide to come to school, and end up having to spend time in the club room until the typhoon passes. As the storm gets stronger, you and Akira get closer.

You head home to the country for the first time in a while and your younger sister Natsuki greets you with open arms. She praises you for how hard you've been working and living alone in Tokyo, but she tells you that she's also wondering if she should go to Tokyo for high school. On a cool, summer night, Natsuki tells you her dreams.

One day, Hanasaka Yui, an examinee, move next to your room. Calm days with neighbors that suddenly started. Such a relationship between the two begins to move little by little, triggered by a certain "Request" -- This is a story of Yui and you in a certain winter --

You and your childhood friend Moeka, who reunited in Tokyo, are spending their days enduring the harsh conditions for each other's dream. Such a lonely person snuggles up and gets a litter warmer, this is a story of Moeka and you in a certain autumn.

Moeka supportsyou with a smile when you take a step toward your dreams. It's a fun time for just two people like when I was a kid. However, on the other hand, Moeka is worried about the reality that emerges. A slight gap was beginning to appear in their steps.

You've finished your exam so you and Saya go out to celebrate. You both seem excited that this might actually be a date and then Saya tells you a secret while you're riding the Ferris wheel.

You have failed your exam and you don't have the heart to face Saya. Surprisingly, Saya also had a secret. Because you're both so awkward, you feel comfortable when you're together. You and Saya decide to ride the Ferris wheel one more time, so you can officially give your relationship a name.

Yui starts sulking and acts rather jealous all the time, but you tell her how you really feel. Despite the supposed strains in your relationship, in the end, this should all make your bond even stronger.

You live and work at a bathhouse that’s in danger of going under and get worked to the bone by the owner's granddaughter, Minori. You’re both very close friends, almost like brother and sister, and another fun-filled day is about to begin.

Minori decides what she wants to do in the future, but she realizes how difficult that will end up being. She doesn’t want to change, but she realizes she has to. The solution that Minori comes up with ends up shocking you...

The two of you had decided to keep the public bath going, but Minori seems troubled at how difficult this venture ends up being. One wintery day, Minori seems to be acting a bit different and wants to tell you something.

Saya very suddenly becomes your tutor and you end up feeling very comfortable around her because she's so nice and positive. Saya also seems very happy that she's able to help someone out.

Saya continues to be your tutor and look over your mock exams. She seems very confident that you're going to be able to pass your college entrance exams.

A quiet town where you can't hear your usual singing voice. Boring days without Moeka. Eventually you start walking. In order to fulfill the promises we have made, we spin words with thought. When that word arrived, Moeka again--

You and Yui spend your first summer together. Yui playfully frolics on the beach and you two become even closer.