"090 - Eko to Issho" is a manga series that revolves around the life of Eko, a young girl who possesses a unique ability to communicate with spirits and supernatural entities. The narrative begins with Eko moving to a new town with her family, where she quickly discovers that her new home is haunted by various spirits. These spirits are not malevolent but are instead lingering due to unresolved issues or emotions tied to their past lives. Eko’s ability to see and interact with them sets her apart from others, making her both a target for supernatural occurrences and a bridge between the living and the dead.

The plot unfolds as Eko encounters different spirits, each with their own backstory and emotional struggles. Through her interactions, she helps these spirits find closure, often by uncovering hidden truths or resolving lingering regrets. The series balances episodic storytelling with an overarching narrative, as Eko’s growing understanding of her abilities and the spiritual world deepens. Along the way, she forms bonds with both the spirits she helps and the living people around her, including classmates and neighbors who become aware of her unique gift.

Key characters include Eko’s supportive but skeptical family, who gradually come to terms with her abilities, and a few recurring spirits who act as guides or companions. The series explores themes of loss, memory, and the emotional connections that transcend life and death. The tone shifts between lighthearted moments and poignant reflections, creating a blend of supernatural mystery and heartfelt drama. As the story progresses, Eko’s role as a mediator between worlds becomes more complex, introducing challenges that test her resolve and empathy. The manga maintains a focus on character-driven storytelling, with each spirit’s tale contributing to the broader exploration of human emotions and the afterlife.