Eiko Aizawa


相沢 栄子


Aizawa Eiko





Hair Color


Eye Color



Manager of Lemon Beach House


Chizuru Aizawa (Older Sister)
Takeru Aizawa (Younger Brother)

Anime Debut

Episode 1

Voice Actor

Ayumi Fujimura (Japanese)
Heather Pennington (English)

Eiko Aizawa (相沢 栄子, Aizawa Eiko) is the manager of the Lemon beach house, Chizuru Aizawa's younger sister, and Takeru Aizawa's elder sister. 


Eiko is a teenage girl with average height, reddish auburn hair and amber eyes.


Ika Musume: Eiko is one of Ika Musume's main obstacles from invading mankind. Eiko sees Ika Musume as a nuisance and usually teases her about invading, sometimes even physically beats her. Despite her frequent irritation towards Ika Musume, Eiko does seem to care for her more than she cares to admit.

Chizuru Aizawa: Eiko's older sister. Eiko respects her older sister and is usually bewildered by her willingness to allow Ika Musume do so many things. She seems to love her, but also notes how odd and somewhat violent she is.

Gorō Arashiyama: Eiko's childhood friend. Gorō and Eiko seem to be rather close. She sometimes teases Gorō about his crush on her sister.

Takeru Aizawa: Eiko's little brother. Eiko cares a lot about Takeru, worrying about his safety and scolding Ika Musume when he almost drowned.

Sanae Nagatsuki: One of Eiko's friends. Eiko and Sanae seem to get along pretty well. However, Eiko is somewhat weirded out by Sanae's fascination with Ika Musume, even labeling her a pervert.

Alex: Eiko seems to love Alex far more than she loves Ika Musume. Eiko was also the one who noted Alex's jealousy towards Ika Musume


Eiko appears very violent when she is first seen as she brutally rubs her fists on Ika Musume's head when she makes a hole in one of the wall in the Lemon Beach House. She is a strong-minded girl and constantly has to keep Ika Musme in check. She likes to play video games and dislikes studying. She could possibly have a Tsundere personality. I n the "Double Trouble" Squid Girl crossover series by Pixton comics artisan Themilkyway, Eiko is one of the Originals, victims of forced suspended animation, who are frozen in time and sent forward over 100 years to the timeline of the new Squid Girl. Eiko is absolutely nonplussed by the fact that there are two Squid Girls and even more so at the superior powers of the new Squid Girl. Eiko plays a small role in the capture of gangster Five-eyes halfway through the series.

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