Graphic novel Kotori Love ExP tells the story of Kotori Shirikawa. The main character's new life adventure is filled with unexpected events and moments that she has long dreamed of. The narrative consists of the main story and numerous additional moments that reveal the essence of difficult moments of the plot. In the gameplay, many scenes focus on sexual interaction between characters.

Most of the passage of Kotori Love ExP consists of dialogues, the rest is choices and intimate interactions between the characters. The story is interactive and allows the gamer to make various choices that affect the future fate of the story, the relationship between the characters and the opening of erotic scenes. The user controls the girl Kotori, who dreams of many dreams in her own life.

To achieve her goals, the protagonist needs a well-thought-out plan and decisive actions. In some moments, it is necessary to take risks without knowing what will come out of current actions. By choosing one of several available options, the user will influence the life of the main character and the maturing mind, facing more difficult life moments and disappointment. The narrative presents everyday situations, the everyday life of Shirikawa and rare events in her life.