OVA
Description
Sora Hirota, nicknamed "Sora-chan," serves as an engineering crew member aboard the Harekaze, hailing from Hayama Town in Miura District, Kanagawa Prefecture. Her childhood experience assisting her father with their family cruiser's engines ignited her passion for ship mechanics, leading her to earn certifications as a Third-Class Marine Engineer and Third-Class Hazardous Materials Handler. Though she admires the Blue Mermaids, she remains undecided about joining them.

Physically, she stands 157 cm tall with a medium build and short brown hair typically adorned with a red ribbon headband. She favors black attire and often pairs her Yokosuka Girls' Marine High School uniform with a grayish-white and light-blue jacket.

Personality-wise, Sora acts as the "straight-talker" in her close friend group, wielding sarcastic humor to tease others about illogical remarks and anchoring conversations in reality. Despite her witty exterior, she reveals a serious, pragmatic nature—methodical and risk-averse, as seen in her steady mahjong tactics. Academically, she excels in physics but struggles with Japanese.

Her technical expertise spans engine maintenance and strategic games like mahjong, where her cautious approach secures wins. This practicality aids her in troubleshooting mechanical issues aboard the ship.

Sora thrives in her quartet of engineering peers—Reo Wakasa, Sakura Ise, and Runa Suruga—bonding over gossip, card games, and beach volleyball. She often counters Maron Yanagiwara's antics, valuing teamwork and camaraderie through lighthearted banter during duties.

Personal trivia includes her preference for savory foods like okonomiyaki and mizu yokan, while disliking junsai. Her favorite phrase, "Morning three, evening four," reflects her appreciation for clever adaptability. She associates her favorite color, black, with the idea that blending it with friends' preferred hues creates infinite possibilities.