"I Had That Same Dream Again" is a manga adaptation of the light novel by Yoru Sumino, illustrated by Idumi Kirihara. The story centers on Minami Nanami, a young girl grappling with feelings of loneliness and confusion about her place in the world. Minami struggles to understand concepts like happiness and the meaning of life, often feeling disconnected from her peers and family. Her journey of self-discovery unfolds through her interactions with three unique individuals: an elderly woman who lives alone, a social outcast who spends her days at the park, and a young girl who has run away from home.

Each of these characters represents a different perspective on life, offering Minami insights into their personal struggles and philosophies. The elderly woman, who has lived a long and complex life, shares her wisdom about finding contentment despite life's hardships. The social outcast, who is often judged by others, teaches Minami about resilience and self-acceptance. The runaway girl, who is searching for freedom and purpose, challenges Minami to question societal expectations and her own desires.

As Minami spends time with these individuals, she begins to reflect on her own experiences and emotions. Her recurring dream, which serves as a metaphor for her inner turmoil, becomes a focal point of her journey. Through her conversations and observations, Minami gradually pieces together a deeper understanding of herself and the world around her. The narrative explores themes of identity, human connection, and the pursuit of happiness, weaving together the lives of its characters in a poignant and introspective manner.

The story is structured in a way that balances Minami's personal growth with the development of the supporting characters, creating a rich tapestry of interconnected lives. The manga maintains a thoughtful and contemplative tone, emphasizing the importance of empathy and self-reflection. By the end of the story, Minami's perspective on life has evolved, offering a nuanced portrayal of the complexities of human emotions and relationships.