シエスタ不可侵条約

Naval Stars Online is a sci-fi work that girls and boys of naval ships of the Japan Maritime Self-Defense Force and other domestic and foreign navies.
It will cover not only steel ships but also wooden ships from before that time. It includes not only historical ships but also active ships.
They are personified is not limited to girls. This is an antithesis to the ship girls in many commercial works.

Type of vessel: Shikishima class battleship, 4th ship
Languages: Japanese, British English
Ideal seiyuu: Hiro Yuuki
Self-identified physical age: 17
Gender: Male
Affiliation history: the Imperial Japanese Navy, Maizuru (main body in service) → Yokosuka, Japan (1926-1965) → Ministry of ScienceYokohama Headquarter (1965-2015) → the Japanese Cyber Force, Yokosuka, Japan (2015-2022) → London, UK (2022-Mar./2024, exchange student) →the Japanese Cyber Force, Yokosuka, Japan (main story)
Likes: English-style tea time, games (good at reasoning, bad at action), the Yokosuka region, tea sweets sold in Yokohama
Dislikes: playing with fire, being sexual, being called an old man (he's fine when he say it himself, but he hurts when people say it tohim)
One of the main characters. He works to save and fight alongside ships that were once sunk. This is based on the idea that cyber security,which is becoming increasingly important in the future, can be supplemented by the human wave tactics of ship souls that have become ableto fight in the cyberspace battlefield.
He has been a member of Yokohama DeNA Baystars since the base moved to Kanagawa Prefecture.

Languages: Japanese, English, Spanish
Ideal seiyuu: Megumi Han
Birthday: 5/May
Birth place: Valencia, Spain
Gender: Male
Likes: Big tits, baseball, beer-like carbonation
Dislikes: Winter, nori, anko
Another main characters. A schoolboy, specialized in Baystars' broadcasting and commentary, and a hacker, he is a trifecta. He is from Spain. His real name is Alberto Esperanza Losverdes.
He loves big tits, baseball and beer-like carbonation. As for big tits, ‘It can't be virtual about all this’, and he makes a face at erotic kids when he finds them.

Languages: Japanese
Ideal seiyuu: Shouya Chiba
Age: 19 (at Apr./2025)
Birthday: 21/November/2005
Birth place: Tochigi, Japan
Gender: Male
Affiliation history: the Japanese Cyber Force, Yokosuka, Japan (2025-)
Likes: Sengoku period, FPS, his family's large dog
Dislikes: Cooking (not hates it, but he's bad at it), caffeinated drinks
At the age of 19, he graduated from the cyber department of the National Defence Academy, skipping a grade, and his talent was recognised when he arrived at Yokosuka Cyber Base, replacing his predecessor who was retiring from the Army. He has red hair tied at the lower back of his head and red eyes. He is male but has a neutral face and is rather small and slender.
The name was taken from Geeta from Pokémon Scarlet Violet, professional baseball player Shohei Ohtani and Nagisa Shioda from Assassination Classroom.

Type of vessel: Yamato class battleship, 1st ship
Languages: Japanese
Ideal seiyuu: Kaori Mizuhashi
Self-identified physical age: 16
Gender: Female
Affiliation history: the Imperial Japanese Navy, Kure (main body in service) → the Japanese Cyber Force, Kure, Japan (2025)
Likes: Japanese tea, yuba, chawanmushi
Dislikes: yakisoba, curry udon
Her height is higher than the average for girls of her age. She has a large cocoa-coloured collar that forms a cloak on her back.
In her everyday appearance, she is concerned that people tend to say that she does not look like a Yamato Nadeshiko for her name.
When she shows her true power, she takes on the same ‘ancient form’ as when her main body was in active service. Her appearance like a princess from the Warring States period is truly Yamato Nadeshiko.

Type of vessel: Izumo class Destoryer, 1st ship
Languages: Japanese
Ideal seiyuu: Yui Ishikawa
Self-identified physical age: 17
Gender: Female
Affiliation history: the Japanese Navy and Cyber Force, Yokosuka, Japan (2015-)
Likes: Tortilla, helping people, shonen manga
Dislikes: Entertainment news, black coffee
Shipheart of an active ship. As of 2025, she is one of the largest destroyers, currently being converted into an aircraft carrier.
She wears a ribbon shaped like a carrier aircraft on the back of her head, and is dressed like a maid. She wears drawers under her skirt, so it's okay if they show.
She has a bright and positive personality, and likes helping and serving others. On the other hand, she likes reading manga, especially shonen manga, and often sympathises with the protagonists and uses it as a common topic with local kids. But she doesn’t read ladies comics or BL(Yaoi).
Things she wants to try are drawing manga and travelling around Europe.

Type of vessel: Nimitz-class nuclear-powered aircraft carrier, 9th ship
Languages: American English
Ideal seiyuu: Nao Touyama
Self-identified physical age: 16
Gender: Female
Belongs to US military base Yokosuka.　The year before the start of the main story, the enrolment base changed between the main body and the ship's soul, and the ship's soul continues to remain in Yokosuka, apart from the main body, which has returned to the USA.
She is good at acting, imitation and voice mimicry, and her own hobby is theatre. Likes curry.
On the other hand, the normally gentle girl is also belligerent, perhaps because of her Nimitz-class blood, and her bravery has particularly influenced her sister Bush.

Type of vessel: Nimitz-class nuclear-powered aircraft carrier, 10th ship
Languages: American English
Ideal seiyuu: Nao Touyama
Self-identified physical age: 14
Belongs to Norfolk base, USA.
Gender: Female
She is often simply called ‘Bush’, but as of 2025 in the main story, a ship named after her son Bush is under construction, so she sometimes refers to herself as ‘CVN-77’. Her first name is ‘オレ’ (ore) or ‘オレ様’ (ore-sama) and her second name is ‘オマエ’ (omae). She has blonde hair and blue eyes, a tall female appearance and a rather rough tone.
Unlike her siblings, she prefers casual dining, hwe favourite food is a ‘Julius Caesar’ hamburger with three slices of meat and three slices of cheese, she is a commoner and, like her namesake, hates broccoli.