SeaMoon

"A Sea Fairy was frozen, trying to reach the moon she loved."

Seamoon is the femslash ship between Sea Fairy Cookie and Moonlight Cookie from the Cookie Run fandom.

Cookie Run Games
Sea Fairy and Moonlight once met in the distant past. Sea Fairy had been cursed to turn into sea foam were she to ever release her sword, and was suffering greatly because of this--however, meeting Moonlight "saved" her from her pain, though it's unclear as to how. Sea Fairy has been yearning to see Moonlight again since that day; though the two have been featured together in comics commissioned by DEVSISTERS, those stories are not canon, and there is no indication that they ever met again after that day.

Sea Fairy is often portrayed through canon material (voicelines, official arts, etcetera) to have a strong desire for reaching/loving the moon. Her quotes in the original Korean version of the Cookie Run games are much more focused on love towards someone else, while in English they are more reminiscent of fate. Despite them never mentioning Moonlight directly, many of them reference her missing someone or recalling something in her past: presumably Moonlight, since she is an integral part of Sea Fairy's story. In her Kingdom gacha draw animation, she is shown to be reaching towards the moon when the ice encasing her breaks and she is revived.

In the last three floors of the Tower of Frozen Waves event in Ovenbreak, the background shows Sea Fairy Cookie frozen while she reaches for the moon. It is likely she used the waves she created to try and reach it, and they formed a tower when they were frozen, leading to the creation of the Tower of Frozen Waves. In the event, Shark Cookie translates a Memory Fragment where Sea Fairy Cookie says she may never return and wishes she could see the moon again. On the penultimate floor, the final Memory Fragment says what Sea Fairy Cookie calls the Purest of Heart is at the top of the tower, as close to the moon as Sea Fairy Cookie could put it. Peppermint Cookie states that her feelings to the moon must be very strong.

In the official "I Want You Every Day" MV, Sea Fairy and Moonlight are shown to the lyrics "your love brought spring to an endless winter," probably referencing Sea Fairy's feelings towards the moon and the impact it had on her.

Real-World Inspirations
In real life, the moon has a great impact on the ocean--specifically, its tides. The moon's gravitational pull affects the Earth, drawing the waves on the ocean towards it; thus, when the moon is closest to one side of the planet, it will be low tide there, and high tide on the other, and vice versa when it travels to the other side. It is very likely that Sea Fairy and Moonlight's story is influenced by this natural phenomenon, as Sea Fairy tries to reach for the moon--effectively raising the sea and causing low tides where she is--when it's in her sights.

Quotes
"Of all cookies, her heart is the warmest..."

- Sea Fairy's relationship chart quote about Moonlight

"I still remember..."

- Sea Fairy

"I thought...I thought I could reach it..."

- Sea Fairy

"If only I could get closer to..."

- Sea Fairy

"Will I ever reach you...?"

- Sea Fairy

"The Sea Fairy's sincere and dear affection for the moon grew and grew until one day it crystallized."

- Sea Fairy's Crystallized Affection treasure description

"The moonlight resting at the crest of the waves tonight--how does it make your heart feel?"

- Dream of the Tower decor description

Fanon
Seamoon is one of the most popular ships within the Cookie Run fandom, and it is potentially the most well-known as it has existed for quite a while. Seamoon continues to gain popularity as time goes on--particularly with the series' newfound popularity following Kingdom--as more people come to learn about Sea Fairy's love for Moonlight.

On AO3, it is the most written ship for both characters. Fans like to tell the two's tale of Sea Fairy longing for Moonlight, and thus the majority of works written are canon compliant with a good portion like to portray them as being human rather than cookies. Some also like the feauture the two in modern AUs.

Fandom
FAN FICTION

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Trivia

 * In one of Sea Fairy's sprites when she is frozen, her pose resembles the one she had in the tale where she tries to reach the moon.
 * Sea Fairy Cookie's Gacha sequence features a shortened version of the Tower of Frozen Waves theme.