Chika's Family

The sober guardians watching over Chisa's chaotic university life.

Chisa's Family refers to the immediate household and relatives of Chisa Kotegawa, a central character in the Grand Blue Dreaming series. While not an organized faction like the Peek a Boo diving club, her family serves as a grounding force representing the 'normal' world outside the chaotic university life on the Izu Peninsula. Their presence occasionally intersects with the main cast, creating comedic tension between Chisa's reserved diving-focused life and her family's expectations. The family includes her older sister Nanaka, a dive instructor at Grand Blue, and her father Toshio, the owner of the diving shop.

Quick Facts

Relation: Parents of Chisa Kotegawa
Location: Grand Blue (Diving Shop)

Lore & Background

Chisa Kotegawa is the daughter of Toshio Kotegawa, owner of the diving shop Grand Blue, and the younger sister of Nanaka Kotegawa, a dive instructor at the same shop. Toshio is also Iori's uncle, making Chisa and Nanaka Iori's cousins. Chisa is a certified diver and works part-time at Grand Blue, prioritizing diving above all else. Her strained relationship with her mother leaves her emotionally guarded, causing her to become flustered in vulnerable moments. Nanaka, a voluptuous yet reserved figure, typically observes rather than participates in the diving club's rowdy activities. Her presence alone causes the members to moderate their usual drunken behavior. She states she would support Iori if he could make her sister happy. Ironically naive about sexual matters, she frequently finds herself in compromising situations with Iori and Azusa.

Reader's Guide

The Kotegawa family operates as a grounding element within the narrative structure of Grand Blue. Their primary goal is to ensure Chika remains safe and focused on her diving, inadvertently clashing with the hedonistic lifestyle of her university peers. Members include Toshio Kotegawa, owner of the diving shop Grand Blue and Iori's uncle, as well as the father of Chika and Nanaka. Nanaka Kotegawa is a diving instructor at Grand Blue and Chisa's older sister. She typically observes rather than participates in the diving club's rowdy activities, and her presence alone causes the members to moderate their usual drunken behavior. Their role in the conflict is passive yet impactful; they create pressure situations where Iori must act responsibly to maintain Chika's cover. This tension adds depth to Chika's character, showing her struggle between two worlds.