『みんなのきょうだい日記3』(Minna no Kyoudai Nikki 3, meaning Everyone's Brother and Sister Diary 3) is a Japan-exclusive Nintendo DS game by Konami. It is the third game in the Days of Memories (Dōm) otome game series, which follows the lives of two people who are paired together by fate. The player takes on the role of the female protagonist, who must make choices that will shape her future. The game features a variety of characters from the previous two games, as well as a few new ones. The story follows the main character as she attends high school, meets new people, and falls in love. The player will have to make decisions that will affect the outcome of the story, as well as affect the relationships between characters. The game also features mini-games and activities like cooking, shopping, and club activities. The game has a unique art style, with bright and colorful graphics. There are also fully voiced cutscenes, which add to the game's charm. The soundtrack is also charming and pleasant to listen to. It is an enjoyable game with a unique story and characters, and is sure to be enjoyed by fans of the series.