A love tale of light and shadow set in the Taisho era.

Tokyo. The year is 1918, a dark age for the world.
In this tale of love and hate, five young men pursue the daughter of an aristocratic family on the verge of ruin.
"Butterfly's Poison; Blood Chains" (Chou no Doku), the beloved visual novel conquering people's hearts with its mature love story, is now available in English and Japanese on Nintendo Switch™!
The home console version includes new episodes and event illustrations.
The text can be set to English or Japanese. This includes in-game text, options, and the digital manual. Language settings can be changed at any time.
- Voices will be in Japanese.
- The text in the opening movie and credits will be displayed in Japanese.
Play in handheld mode with the Nintendo Switch Joy-Con™ controllers attached, or detach them and play with just the touch controls! While in tabletop mode or TV mode, everything can be controlled using only the Joy-Con™ (R), allowing you to play with only one hand! Also available for the Nintendo Switch™ Lite. (A separate Joy-Con™ (R) is required to play with one hand.)
Gameplay in this visual novel involves reading through the story while making choices at certain key points. Different decisions may lead to different outcomes, story branches, and endings.

Curious and decisive.
She may be an aristocratic lady, but she is determined to learn more about the world as she isn’t blind to the danger looming over her family.
A wealthy merchant and a nouveau riche. 28.
For some unknown reason, he is obsessed with the protagonist and uses his wealth as a pretense to ask her to marry him. A pompous man with an attitude, he is an eccentric who is comfortable in his own skin.
The protagonist's older brother. 22.
As the viscount's eldest son, he is the head of their flower arrangement school. He has an aloof and pessimistic personality. He is also a libertine who adores painting as much as he does women, but he treats his little sister like she is a precious gem.
A servant of the Nomiya family. 25.
Although his status is that of a servant, he is actually protagonist's first love.
He is a young man who loves plants and has a friendly and calm personality.
The butler of the Nomiya family. 37. Half British.
He has been working for the Nomiya family ever since the protagonist was a child. He is an honest man, but it's difficult to tell what he is thinking through his stoic face.
The first son of a baron family and a sublieutenant of the army. 24.
He may be the protagonist's childhood friend, but he is very cold toward her.
He is a clean freak with a serious and steadfast personality. His ability as a military man is unquestionable.
The only daughter of a rich family that runs a liquor wholesale business. Married to a quiet man, she is a pleasure-seeker who's been doing whatever she wants ever since she gave birth to her son.

Release Date
Supported Play Modes
Supported Languages
Butterfly's Poison; Blood Chains
Visual Novel
November 11, 2022
USD 44.99 / CAD 59.99 / 44,99 EUR
Nintendo eShop
Nintendo Switch System / Nintendo Switch Lite System
TV mode / Tabletop mode / Handheld mode
English / Japanese (Audio is Japanese only.)
Full voice acting (Protagonist is unvoiced.)
ESRB Mature 17+ / PEGI 16 / USK 16 / CERO D

Bunge Maruki
Chigiri Amano