---
title: "Circadia"
description: "Hiroki Katayama is your average high school kid. He moved to the undersea city Blue Genesis because of his foster dad, his uncle Shigeru's, job.  Right after he"
image: "https://t.vndb.org/cv/29/119329.jpg"
---

# Circadia

![Circadia](https://t.vndb.org/cv/29/119329.jpg)

**Alternative Title:** サーカディア

**Developer:** Alvion Co., Ltd.

**Release date:** Jan 14, 1999

**Platform:** PSP, PS1, PS3, PS Vita

**Language:** Japanese

**Rating:** 8.5/10 (avg, 2 votes)

## Description
Hiroki Katayama is your average high school kid. He moved to the undersea city Blue Genesis because of his foster dad, his uncle Shigeru's, job. 
Right after he got there, he could tell this place wasn't exactly normal. There were all these rumors, like ghosts showing up, or people getting attacked by monsters called Nightmares. Everyone acted like it was a joke, but still... 
The night they moved in, some weird creature showed up right in front of him. It called itself Navi and said if they lived together, it could awaken his psychic powers. Navi told him there's some huge disaster happening in the real world right now, and if they don't stop it, everything's going down for good. 
It sounded like something that had nothing to do with him, but just like the rumors said, Nightmares really were wandering around Blue Genesis. So even though he didn't want any part of this mess, he started looking for other espers just like Navi told him to.

[Translated from [the official website](https://web.archive.org/web/20010813014059/http://www.alvion.co.jp/frame_cirtop.html)]

## Characters
### Katayama Hiroki (片山弘樹)
- **Gender:** Male
- **Measurements:** Height: 169cm, Weight: 58kg
- **Birthday:** 28 March
- **Traits:** 
- **Voiced by:** Hiyama Nobuyuki

### Asakura Yumi (朝倉 優美)
- **Gender:** Female
- **Measurements:** Height: 158cm, Bust-Waist-Hips: 80-53-86cm
- **Birthday:** 13 September
- **Traits:** 
- **Voiced by:** Shiratori Yuri

### Hayami Kengo (速水 健吾)
- **Gender:** Male
- **Measurements:** Height: 187cm, Weight: 78kg
- **Birthday:** 5 May
- **Traits:** 
- **Voiced by:** Hayami Shou

### Hosaka Ryouta (保坂 良太)
- **Gender:** Male
- **Measurements:** Height: 122cm, Weight: 38kg
- **Birthday:** 26 July
- **Traits:** 
- **Voiced by:** Tanaka Mayumi

### Igarashi Keisuke (五十嵐 啓介)
- **Gender:** Male
- **Measurements:** Height: 184cm, Weight: 72kg
- **Birthday:** 12 December
- **Traits:** 
- **Voiced by:** Inoue Kazuhiko

### Inui Sayaka (乾 沙夜香)
- **Gender:** Female
- **Measurements:** Height: 173cm, Bust-Waist-Hips: 93-60-92cm
- **Birthday:** 3 November
- **Traits:** 
- **Voiced by:** Katsuki Masako

### Kagemori Hijiri (影守 聖)
- **Gender:** Male
- **Measurements:** Height: 182cm, Weight: 64kg
- **Birthday:** 28 January
- **Traits:** 
- **Voiced by:** Miki Shin'ichirou

### Kiryuuin Ayahiko (桐生院 綾彦)
- **Gender:** Male
- **Measurements:** Height: 184cm, Weight: 71kg
- **Birthday:** 18 November
- **Traits:** 
- **Voiced by:** Okiayu Ryoutarou

### Kiryuuin Miyuki (桐生院 深雪)
- **Gender:** Female
- **Measurements:** Height: 165cm, Bust-Waist-Hips: 80-56-83cm
- **Traits:** 
- **Voiced by:** Yajima Akiko

### Kisaragi Mimi (如月 美海)
- **Gender:** Female
- **Measurements:** Height: 126cm, Bust-Waist-Hips: 72-54-78cm
- **Birthday:** 22 April
- **Traits:** 
- **Voiced by:** Sayuri

### Mitsurugi Akira (御剣 晃)
- **Gender:** Male
- **Measurements:** Height: 181cm, Weight: 68kg
- **Birthday:** 24 December
- **Traits:** 
- **Voiced by:** Hori Hideyuki

### Navi (ナビ)
- **Gender:** Unknown
- **Traits:** 
- **Voiced by:** Takayama Minami

### Ootsuka Mamoru (大塚 守)
- **Gender:** Male
- **Measurements:** Height: 173cm, Weight: 60kg
- **Birthday:** 11 October
- **Traits:** 
- **Voiced by:** Midorikawa Hikaru

### Ryuumon Kaname (竜門 要)
- **Gender:** Male
- **Measurements:** Height: 173cm, Weight: 63kg
- **Birthday:** 7 June
- **Traits:** 
- **Voiced by:** Seki Toshihiko

### Shinohara Tomomi (篠原 智美)
- **Gender:** Female
- **Measurements:** Height: 163cm, Bust-Waist-Hips: 83-58-86cm
- **Birthday:** 29 February
- **Traits:** 
- **Voiced by:** Inoue Kikuko

### Sugiura Izumi (杉浦 泉)
- **Gender:** Female
- **Measurements:** Height: 172cm, Bust-Waist-Hips: 85-58-84cm
- **Birthday:** 1 August
- **Traits:** 
- **Voiced by:** Adachi Shinobu

### Yazawa Mai (矢沢 麻衣)
- **Gender:** Female
- **Measurements:** Height: 160cm, Bust-Waist-Hips: 87-57-87cm
- **Birthday:** 25 March
- **Traits:** 
- **Voiced by:** Nagasawa Miki

## Shops
- [Official Website](https://web.archive.org/web/20010813014059/http://www.alvion.co.jp/frame_cirtop.html)

## Releases
### Japanese
- **1999-01-14**: Circadia - [Official website](https://web.archive.org/web/20010813014059/http://www.alvion.co.jp/frame_cirtop.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=5559)
- **2010-08-14**: Circadia

## Tags
Underwater, Male Protagonist, ESP

## More Games from Alvion Co., Ltd.
- [Circadia](https://pinovel.net/v31383)
- [Fragment's Note](https://pinovel.net/v11118)
- [Fragment's Note 2 Side: Shizuku](https://pinovel.net/v13119)
- [Fragment's Note 2 Side: Yukitsuki](https://pinovel.net/v14807)
- [Fragment's Note -After Stories-](https://pinovel.net/v15853)
- [Fragment's Note Memories -Exclusive Mini Scenario-](https://pinovel.net/v16765)

---
*View the full details at [pinovel.net/v31383](https://pinovel.net/v31383).*

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