Mugen Yasoukyoku


Mugen Yasoukyoku
TitleMugen Yasoukyoku
Original title夢幻夜想曲
LengthMedium (10 - 30 hours)
DeveloperApricot (old)
Publishers The Asenheim Project & AquaWave & Excellents & Apricot (old) & Arieroof
 ViLE team & The Asenheim Project & RCY America & BaSFTech & Milky House & JAST USA
 SAM Style
 The Asenheim Project
 The Asenheim Project
Alternative version
[unofficial] Dark Illusions
Available atJAST USA Memorial Collection Special Edition at J-List for US$ 4.95 »


Nocturnal Illusions' genre is a mixture of a dating sim and visual novel. In this game the main character decides to get away from it all during his spring break and stay in the mountains. While staying in the mountains a massive storm causes the main character to faint. A mysterious woman saves him and uses sexual pleasure to keep him warm. It turns out that he is now in a strange old mansion. The woman who saved the main character is the mistress in charge of the place. The main character decides to explore and while there meets many women as the story unfolds...

[Edited from Wikipedia]

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Kashiwagi Shin'ichi柏木慎一 
Hair, Brown
Body, Olive
Clothes, Jacket, Jeans, T-shirt
Personality, Boku
Role, Nameable, University Student
Engages in, Drinking
Subject of, Accident
Engages in (Sexual)
Subject of (Sexual)


The protagonist of the game. He has been studying law a Toshima University. His life is at a crossroads, though; he's not sure what type of life he wishes to lead. He arrives at the mansion after encountering a typhoon.

Main characters

Hair, Blond, Curtained, Long, Sidehair
Eyes, Brown
Body, Kid, Younger Appearance
Clothes, Brooch, Ribbon Hair Accessory
Personality, Atashi, Immature
Subject of, Weakness
Engages in (Sexual)
Subject of (Sexual)


A young girl who is older than she appears. Her true nature is unknown. Shinichi often has visions of her, but she isn't seen around the mansion.

Hair, Curtained, Long, Ponytail, Red, Thick Eyebrows
Eyes, Red
Body, Slim, Young-adult
Clothes, Hair Ribbon, Knee-high Socks, Miniskirt, Shimapan, Turtleneck Shirt
Personality, Boku, Immature, Mischievous, Modern Tsundere, Naive, Tomboy, Whimsical
Engages in, Teasing
Engages in (Sexual)
Subject of (Sexual)


A girl who grew up in the mansion and wasn't raised by anyone. Due to this, she is very childlike and extremely innocent, even to the point she doesn't know about sex. An outspoken, athletic tomboy, she likes to tease Shin'ichi, especially when he persists in trying to escape the mansion.

AliasesYakata no Onna Shujin
Hair, Violet
Eyes, Blue
Body, Adult
Clothes, Brooch
Personality, Low Self-esteem, Mysterious, Refined, Watakushi
Role, No Name
Subject of, Amnesia
Engages in (Sexual)
Subject of (Sexual)


The mistress in charge of the mansion, she refuses to even give Shin'ichi her name. She has an almost psychic ability to foretell when someone will arrive at the mansion and always seems to know what's going on. Most of her communication with Shin'ichi is cryptic, as such it is hard to know how much she knows about the mansion.

Okazaki Maya
Okazaki Maya摩耶 
Hair, Orange, Short
Body, Pale
Clothes, Cravat, Earrings, High Heels, Pantyhose, Skirt Suit, Suit, Sunglasses
Personality, Ambitious, Confident, Distrustful, Mature, Sharp-tongued, Watashi
Role, Journalist
Engages in, Cooking
Subject of, Malevolent Possession
Engages in (Sexual)
Subject of (Sexual)


A journalist who has had previous bad experiences with men and despises them (due to overhearing people saying things like "she's just a woman" and that she should become a house wife). Her competitiveness gives her personality a hard, grating edge.

Hair, Grey, Long, Spiky Bangs
Eyes, Grey
Body, Adult, Fang
Clothes, Kimono
Engages in, Hypnotism
Engages in (Sexual)
Subject of (Sexual)


A mysterious woman who only appears at night and spends all her time in the garden, waiting for her lover to return.

Hair, Violet
Eyes, Violet
Body, Slim, Young-adult
Clothes, Ribbon Tie
Personality, Atashi
Engages in
Subject of, Amnesia, Androphobia, Hypnotism
Engages in (Sexual)
Subject of (Sexual)


A very shy woman who spends most of her time in her room. She is terrified of Shin'ichi to the point where he can't get out more than a few sentences before she runs away screaming.

Side characters

Kunio Kusayama
Kunio Kusayama 
Hair, Blue, Short, Short Bangs
Clothes, Necktie, Suit
Personality, Ore, Pervert, Sloppy
Role, Coder
Engages in, Drinking, Smoking
Subject of


A computer programmer who ended up in the mansion after an alcohol binge. He invites Shin'ichi to drink in his room leading to them both collapsing from the amount of alcohol drunk. His main activities are to fantasize about the girls in the mansion and finding another substance to imbibe.