---
title: "Deep One"
description: "Naoya and his twin sister Konoka had lost their parents at a young age and had a tough childhood. Nevertheless they still managed to find happiness in the littl"
image: "https://t.vndb.org/cv/54/97954.jpg"
---

# Deep One

![Deep One](https://t.vndb.org/cv/54/97954.jpg)

**Alternative Title:** Deep One -ディープワン-

**Aliases:** This is a bruised named "perfection" which is engraved on its soul., That is the scar left by deities on the depth of my soul., D1

**Developer:** Nameless

**Release date:** Oct 26, 2018

**Platform:** Windows, PS4, Switch

**Language:** Japanese, Chinese (simplified)

**Rating:** 6.2/10 (82 votes)

## Description
Naoya and his twin sister Konoka had lost their parents at a young age and had a tough childhood. Nevertheless they still managed to find happiness in the little things in life and wished that these warm peaceful days would last forever. However, this faint hope was mercilessly crushed when a Grimoire suddenly appeared before them. It is a forbidden magic book that has existed since the beginning of time, but which should not be in the human realm. They thought that they were an ordinary family, but they were actually the heirs to the “Old One”, which has the power to destabilize the world.

[From [Hau~ Omochikaeri~!](https://omochikaeri.wordpress.com/2018/10/17/october-2018-eroge-releases/)]

## Characters
### Itsukino Naoya (斎野 尚哉)
- **Gender:** Male
- **Aliases:** つきの, Tsukino, なおやん, Naoyan
- **Measurements:** Height: 169cm, Weight: 68kg
- **Birthday:** 24 May
- **Hair:** Brown, Short, Multicolored, Spiky Bangs, Shaggy
- **Eyes:** Brown, Amber, Heterochromia, Tsurime
- **Body:** Teen, Slim, Pale, Olive, Large Penis
- **Items:** Sword
- **Clothes:** Jacket, T-shirt, Sports Shoes, Hoodie, Suspenders, Capri Pants
- **Personality:** Ore, Protective, Honest
- **Role:** Twin Brother, Older Brother
- **Voiced by:** Kitami Rikka

### Hinamori Saya (比奈森 沙耶)
She is polite, graceful, and refined.
A Yamato Nadeshiko who looks great in elegant Japanese clothing .

Like the Yuuki family, she is the head of the Hinamori family, one of the pillars of the branch family. 
However, unlike Yuuki Kasumi, she is devoted to the head of the main family, Naoya, with absolute loyalty that borders on worship, and a sense of selfless devotion.

Despite her delicate physique, she is a skilled swordsman, unmatched by anyone in her family.

- **Gender:** Female
- **Measurements:** Height: 142cm, Weight: 38kg, Bust-Waist-Hips: 69-52-73cm, AA cup
- **Birthday:** 29 October
- **Hair:** Black, Hime Cut, Waist Length+, Straight, Blunt Bangs, Sidehair
- **Body:** Slim, Pale, Kid, Younger Appearance, Flat Chest
- **Eyes:** Green, Tsurime
- **Clothes:** Kimono, Skirt, Thigh-high Stockings, Ribbon Hair Accessory, Unusual Hair Ornaments, Bridal Gauntlet, Pleated Skirt, String Ribbon Tie, Zouri, Tabi
- **Items:** Katana
- **Personality:** Refined, Watakushi
- **Role:** Yamato Nadeshiko
- **Voiced by:** Kusuhara Yui

### Itsukino Konoka (斎野 九花)
She is the gentle, kind, and incredibly gentle twin sister of Naoya.
She adores her older brother Naoya and is always by his side, both in the shadows and in the light, which has earned her the nickname of an older sister, despite her being the younger sister.

Due to her pretty appearance, she is immensely popular both in the downtown area and at school, but Konoka herself is completely unaware of this and has a somewhat airheaded personality, just like her brother.

Within her body she hides the Grimoire, the work and symbol of Itsukino, but she herself is not yet aware of her destiny.

- **Gender:** Female
- **Measurements:** Height: 158cm, Weight: 50kg, Bust-Waist-Hips: 95-63-86cm, H cup
- **Birthday:** 24 May
- **Hair:** Brown, Waist Length+, Straight, Braid, Multicolored, Claret, Spiky Bangs
- **Eyes:** Brown, Tareme
- **Body:** Teen, Slim, Pale, Big Breasts
- **Role:** Magician, Twin Sister, Younger Sister
- **Engages in:** Cooking
- **Clothes:** Cardigan, Miniskirt, Thigh-high Stockings, Court Shoes, Hair Flower, Ribbon Hair Accessory, Pleated Skirt, Loose, Turtleneck Tank Top
- **Personality:** Friendly, Kind, Watashi
- **Voiced by:** Sawada Natsu

### Rosalia Lombardo (ロザリア・ロンバルト)
- **Gender:** Female
- **Measurements:** Height: 138cm, Weight: 28kg, Bust-Waist-Hips: 66-47-68cm, AA cup
- **Birthday:** 14 February
- **Hair:** Blond, Twin Braids
- **Eyes:** Amber, Jitome
- **Clothes:** Habit

### Yuhara Aki (柚原 亜希)
[spoiler]Her real name is "Itsukino Touka (斎野 透花)", youngest sister of Itsukino family.[/spoiler]

- **Gender:** Female
- **Measurements:** Height: 154cm, Weight: 41kg, Bust-Waist-Hips: 78-56-80cm, B cup
- **Birthday:** 25 May
- **Hair:** White, Bob Cut, Short, Straight, Eye Covering, Spiky Bangs, Parted to Side, Sidehair
- **Body:** Teen, Slim, Pale
- **Role:** Magician, Full Sister, Friend, Classmate, Younger Sister
- **Eyes:** Grey, Tareme
- **Clothes:** Mini-dress, Wristband, Hairpin, Detached Sleeves, Body Ribbon, Clothing with Ribbons, Choker, Lace-up Shoes
- **Personality:** Reserved, Flustered, Watashi
- **Voiced by:** Sawasawa Sawa

### Yuuki Kasumi (佑姫 カスミ)
She is intelligent, competitive, and confident.
She is the epitome of a genius. 
She is a Celtic witch from England that always carries with her a minion-type grimoire called "Nancy," modeled after a black cat familiar. 

She is the head of the Yuuki family, one of the pillars of the Itsukino family, including Naoya, but due to past grudges, she tends to be harsh towards the twin siblings.

- **Gender:** Female
- **Measurements:** Height: 168cm, Weight: 54kg, Bust-Waist-Hips: 86-58-82cm, E cup
- **Birthday:** 21 December
- **Hair:** Blue, Ponytail, Wavy, Ringlet, Spiky Bangs, Parted to Side, Sidehair
- **Body:** Teen, Slim, Pale, Big Breasts
- **Role:** Magician, British
- **Clothes:** Skirt, Pantyhose, Blouse, Bracelet, Brooch, Ribbon Hair Tie, Decorative Belt, Ankle Boots, High Heeled Boots
- **Personality:** Confident, Atashi
- **Eyes:** Teal
- **Items:** Sceptre
- **Voiced by:** Kamishiro Misaki

### Fujinomiya Atsushi (文示宮 篤)
The next head of the Fujinomiya family, second only to the main Itsukino family.
Intelligent, cool-headed, and possessing a charismatic air that belies his age.

While he was previously on friendly terms with Naoya as his cousin, he now detests him as a sworn enemy, eventually declaring war on the Itsukino family and Naoya in a "coup d'état".

- **Gender:** Male
- **Measurements:** Height: 178cm, Weight: 72kg
- **Birthday:** 1 May
- **Hair:** Red, Short, Straight, V Bangs, Parted to Side
- **Body:** Slim, Pale, Young-adult
- **Role:** Magician
- **Eyes:** Grey, Hosome
- **Clothes:** Glasses, Vest, Gloves, Belt, Chain Jewellery, Bolo Tie, Ankle Boots, Coat Cape, Formal Shirt
- **Personality:** Ore, Smart, Charismatic
- **Items:** Book
- **Voiced by:** Domon Atsushi

### Houmatsu Yoruko (泡沫 夜仔)
- **Gender:** Female
- **Measurements:** Height: 167cm, Weight: 55kg, Bust-Waist-Hips: 93-62-90cm, G cup
- **Birthday:** 23 September
- **Hair:** Brown, Waist Length+, Wavy, Spiky Bangs, Parted to Side, Sidehair
- **Body:** Slim, Pale, Adult, Big Breast Sizes, Mole, Nail Polish, Makeup
- **Eyes:** Violet, Hosome
- **Clothes:** Glasses, Shirt, Miniskirt, Pantyhose, Lab Coat, Court Shoes, Pendant Necklace, Choker, Ankle-Strap Shoes
- **Personality:** Pretending, Mischievous
- **Role:** Teacher, Assassin, Demon
- **Voiced by:** Kaibara Elena

### Iyo (一葉)
- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 91-60-88cm, F cup
- **Hair:** Brown, Spiky Bangs, Parted to Side, Spiky Bun
- **Eyes:** Brown, Tsurime, Hosome
- **Body:** Slim, Pale, Adult, Big Breast Sizes, Mole
- **Clothes:** Skirt, Court Shoes, High Heels, Blouse, Turtleneck Shirt, Puffy Sleeves
- **Role:** Legal Guardian, Non-human
- **Personality:** Cold-hearted, Refined
- **Voiced by:** Isshiki Hikaru

### Nancy (ナンシー)
- **Gender:** Female
- **Hair:** Pink, Waist Length+, Wavy, Blunt Bangs, Hikimayu, Sidehair
- **Body:** Teen, Slim, Pale, Kemonomimi, Fur, Magic Tattoo, Furry Tail
- **Eyes:** Green, Tsurime, Symbol
- **Role:** Servant, Spirit, Cat
- **Engages in:** Shapeshifting
- **Clothes:** Tank Top, Detached Sleeves, Ribbon Tie, Clothing with Ribbons, Hair Tie, Garter, Ankle Socks, Crop Top, Pleated Skirt, Puffy Sleeves, Microskirt, Mary Jane
- **Personality:** Energetic, Loyal
- **Voiced by:** Suzuki Every

### Samuel Harwood (サミュエル・ハーウッド)
- **Gender:** Male
- **Measurements:** Height: 173cm, Weight: 65kg
- **Birthday:** 25 July
- **Hair:** Black, White, Short, Straight, Moustache, Multicolored, No Bangs, Parted to Side
- **Body:** Slim, Old, Olive, Wrinkles
- **Clothes:** Trousers, Dress Shoes, Suit, Shirt, Vest, Monocle, Chain Jewellery, Cape, Cravat
- **Personality:** Donkan, Honorable, Refined, Loyal
- **Role:** Magician, British
- **Items:** Walking Stick, Sceptre
- **Eyes:** Hosome, Teal
- **Voiced by:** Ide Gorou

### Tokigaya Shuuitsu (朱鷺谷 衆逸)
- **Gender:** Male
- **Measurements:** Height: 155cm, Weight: 88kg
- **Birthday:** 8 January
- **Hair:** Black, Curtained, Short, Straight, Spiky Bangs, Slicked Back
- **Body:** Slim, Pale, Young-adult
- **Clothes:** School Uniform, Trousers, Dress Shoes, Aloha Shirt
- **Eyes:** Black, Tsurime, Hosome
- **Items:** Katana
- **Personality:** Ore, Carefree, Taciturn
- **Role:** Cousin, Student Council President
- **Voiced by:** Kirigi Lee

### Yamamoto Motoki (山元 元喜)
- **Gender:** Male
- **Aliases:** 山ゲン, Yamagen
- **Measurements:** Height: 162cm, Weight: 58kg
- **Birthday:** 3 April
- **Hair:** Black, Short, Spiky Bangs, Short Bangs, Shaggy
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale
- **Clothes:** Shirt, Sports Shoes, Watch, Turtleneck Shirt, Capri Pants, Band-aid
- **Personality:** Friendly, Relaxed
- **Role:** Childhood Friend
- **Voiced by:** Hoshihane Yuri

### Yato Sayataka (八戸 莢貴)
- **Gender:** Male
- **Measurements:** Height: 177cm, Weight: 63kg
- **Birthday:** 29 February
- **Hair:** Brown, Shoulder-length, Spiky Bangs, Shaggy
- **Body:** Teen, Slim, Pale
- **Eyes:** Amber, Tsurime
- **Clothes:** Necktie, Shirt, Sports Shoes, Hairpin, Headphones
- **Role:** Friend
- **Personality:** Third Person
- **Engages in:** Breaking the Fourth Wall
- **Voiced by:** Haru Danji

## Shops
- [Official Website](http://nameless.nexton-net.jp/game/do01/)
- [Getchu](http://www.getchu.com/soft.phtml?id=1010402)

## Releases
### Japanese
- **2018-07-13**: Deep One - Trial Edition - [Official website](http://nameless.nexton-net.jp/game/do01/download.html)
- **2018-09-14**: Deep One - Trial Edition Vol.2 - [Official website](http://nameless.nexton-net.jp/game/do01/download2.html)
- **2018-10-26**: Deep One - Package Edition - [Official website](http://nameless.nexton-net.jp/game/do01/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26297), [Getchu](http://www.getchu.com/soft.phtml?id=1010402)
- **2018-10-26**: Deep One - Download Edition - [Official website](http://nameless.nexton-net.jp/game/do01/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=26297), [DMM](https://dlsoft.dmm.co.jp/detail/next_0255)
- **2023-07-26**: DeepOne - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34117), [PlayStation Store (JP)](https://store.playstation.com/ja-jp/product/JP0741-CUSA26451_00-DEEPONEZZZZZZZZZ)
- **2023-07-27**: Deep One - Regular Edition - [Official website](http://nameless.nexton-net.jp/game/do01cs/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34118), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=1889513), [PlayAsia](https://www.play-asia.com/13/70g3c7)
- **2023-07-27**: Deep One - Regular Edition - [Official website](http://nameless.nexton-net.jp/game/do01cs/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34117), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=1889511), [PlayAsia](https://www.play-asia.com/13/70g3c3)
- **2023-07-27**: Deep One - Limited Edition - [Official website](http://nameless.nexton-net.jp/game/do01cs/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34117), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=1889510), [DMM](https://www.dmm.com/mono/hobby/-/detail/=/cid=storeghb002053k7aupbezo/), [PlayAsia](https://www.play-asia.com/13/70g3c9)
- **2023-07-27**: Deep One - Limited Edition - [Official website](http://nameless.nexton-net.jp/game/do01cs/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34118), [Melonbooks.co.jp](https://www.melonbooks.co.jp/detail/detail.php?product_id=1889512), [DMM](https://www.dmm.com/mono/hobby/-/detail/=/cid=storeghb00205mj3i7e3kms/), [PlayAsia](https://www.play-asia.com/13/70g3cf)
- **2023-07-27**: DeepOne - [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=34118), [Nintendo (JP)](https://store-jp.nintendo.com/item/software/D70010000062242)

### Chinese (simplified)
- **2018-07-15**: Deep One - [Official website](https://tieba.baidu.com/p/5795685217)
- **2019-04-15**: Shenyuan de Laifangzhe - [Official website](https://tieba.baidu.com/p/6100281516)
- **2019-04-15**: Shenyuan de Laifangzhe - [Official website](https://tieba.baidu.com/p/6100281516?pn=3)

## Tags
Magic, Action, Yamato Nadeshiko Heroine, Sword Combat, Magic/ESP Combat, Male Protagonist, Modern Day, Linear Plot, Low Sexual Content, Shy Heroine, Brief NVL Scenes, Witch Heroine, Martial Artist Protagonist, Sword Wielding Protagonist, Infodumping, Protagonist with a Face, Protagonist with Partial Voice Acting, Tactician Heroine, Spontaneous Power-ups, Bad Endings with Story, Protagonist with Heterochromia, Protagonist's Twin as a Heroine, Hint Corner, Built-in Walkthrough, High Amount of Special Effects, White Haired Heroine, Built-in Encyclopedia, Twincest, Varied Title Screens, Urban Fantasy, Straight Lolicon, Protagonist's Younger Sister as a Heroine, Blood-related Brother/Sister Incest

## More Games from Nameless
- [Deep One](https://pinovel.net/v22499)
- [DeepOne -Ryoukai Shinpan-](https://pinovel.net/v32797)

---
*View the full details at [pinovel.net/v22499](https://pinovel.net/v22499).*

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