"Dreamin' Sun" is a manga series that centers on Shimana Kameko, a 16-year-old girl who feels disconnected from her family and struggles with feelings of loneliness. After her father remarries, Shimana decides to run away from home, unable to cope with the changes in her household. Wandering the streets, she encounters a mysterious man named Taiga, who offers her a place to stay in exchange for fulfilling three conditions: she must explain her reasons for running away, she must clean the house, and she must seek his permission before falling in love. Shimana agrees and moves into the shared house with Taiga and two other residents: Fujiwara, a carefree and flirtatious young man, and Zen, a quiet and reserved high school student.

As Shimana adjusts to her new living situation, she begins to form bonds with her housemates, each of whom has their own struggles and complexities. Taiga, who initially appears aloof and enigmatic, gradually reveals a kind and protective nature, while Fujiwara’s playful demeanor masks deeper insecurities. Zen, though reserved, develops a close friendship with Shimana, and their interactions highlight themes of trust and emotional growth. The series explores Shimana’s journey of self-discovery as she navigates her relationships, confronts her feelings of abandonment, and learns to open herself up to others.

The narrative delves into themes of family, love, and personal growth, with Shimana’s evolving relationships serving as the focal point. Her interactions with Taiga, in particular, become increasingly significant as their bond deepens, blending moments of humor, warmth, and emotional tension. The story also addresses the challenges of adolescence, including the search for identity and the complexities of forming meaningful connections. Through its exploration of these themes, "Dreamin' Sun" presents a heartfelt and relatable portrayal of a young girl’s journey toward finding her place in the world.