Haruka Sokawa, a dedicated member of Team Daybreak and caretaker to Mirei Minae, bears a surname blending the kanji for "all" (惣) and "river" (川), mirroring its linguistic roots. Competing in the Deluxe Tournament’s Group D, she is eliminated after hard-fought losses to Megumi Okura and Michiru Hazama. Her career reflects persistent struggles, including defeats by Danji Momoyama (overDress Episode 16) and Zakusa Ishigame (will+Dress Episode 27), though she claims victory against Yamamoto in overDress Episode 21. Despite occasional triumphs, recurring losses to Mirei Minae in both depicted and implied clashes underscore her challenges.

Haruka wields a Brandt Gate deck anchored by the avatar Gravidia Nordlinger, leveraging Meteorite Orders to dismantle enemy rear-guards or harvest resources via accumulated meteorites. While core components like critical triggers (Patrol Robo, Dekarcop; Cardinal Draco, Barbizonde) and the Over Trigger (Star Dragon Deity of Infinitude, Eldobreath) remain consistent, her draw triggers shift between Cardinal Fang, Fulgrus, and Ameliorate Connector in later adaptations.

Her role within Team Daybreak and tournament arcs paints a portrait of resilience amid adversity, though her internal drives and broader growth beyond these competitive trials remain unexplored in documented narratives.