In 'Whose Diary Is It Anyway?', players step into the shoes of Mia, a curious and witty student who stumbles upon a mysterious diary left behind in the school library. As Mia reads through the entries, she discovers a story filled with intrigue, heartbreak, and the personal struggles of different classmates. Players must navigate scholarly hallways, engage in dialogues with quirky characters, and solve puzzles based on the diary's contents to uncover the identity of its author while making choices that affect the storyline. Each chapter presents new themes and emotional challenges, leading to multiple possible endings. Can Mia reveal the truth without breaking hearts in the process?