Sachi no Tenbin


Sachi no Tenbin
TitleSachi no Tenbin
Original title幸の天秤
AliasesScales of Happiness, Sachi's Scales
LengthShort (2 - 10 hours)
DeveloperOperetta Due
Publishers Operetta Due


Ayase Yuki is the very definition of a plain girl.
She dreams of a happy married life with her boyfriend since her high school days. Devoted to him, Yuki works everyday to give him her all.

However, that dream came to an abrupt end when he uttered the words, "let's break up".
Thrown away like a used up, dirty rag, Yuki loses all hope as she stands listlessly in the pouring rain.

The one who came to speak to her wasn't a parent or a best friend, but a beautiful young man she had never met before.
The young man smiled as he made a proposal:

"Are you going to just end it all like your run-of-the-mill tragic heroine? Or will you cooperate with me and get your revenge?"

What conclusion awaits? A "clichéd tragedy" or "revenge"?
Her days of choice-making begins...

[Translation of the official website's story summary.]


Ayase Yuki
Ayase Yuki綾瀬 幸 
Hair, Black, Bob Cut, Brown, Curly, Curtained, Dyed, Long, Parted in Middle, Ponytail, Sidehair, Straight
Eyes, Brown
Body, Nail Polish, Pale, Slim, Young-adult
Clothes, Boots, Clothing with Ribbons, Dress, High Heels, Hoodie, Mini-dress, Necklace, Thigh-high Stockings
Personality, Friendly, Hardworker, Kind, Low Self-esteem, Serious
Role, Dominant Partner, Ex-girlfriend, Nameable, Not a Virgin, Orphan
Engages in, Revenge
Subject of, Homicide
Engages in (Sexual), Group Sex, Outdoor Sex, Sex in Front of an Audience, Sex in Public Places, Sixty-nine
Subject of (Sexual), Multiple Penetration, Sexual Blindfold
Voiced byTezuka Ryouko


Very much the opposite of her name, Yuki is a very unlucky person. Her parents passed away when she was young, so she was raised by her grandparents. However, they too passed away upon her graduating high school. She loses hope after her boyfriend Shinohara Reiji- whom she perceived as her one and only instance of "good luck"- cut ties with her. Yuki was then taken in by Mochizuki Akira.

Though she was greatly weakened because of Reiji dumping her, Yuki is usually a very resilient, strong and cheerful person. It's not like she's bad-looking, but since she has no interest in fashion whatsoever, she appears plain.

[Based on translations of her official website profile.]

Main characters

Mochizuki Akira
Mochizuki Akira望月 輝 
Hair, Blond, Short
Eyes, Amber
Body, Pale, Slim, Young-adult
Clothes, Belt, Jeans, Shirt, Sweater
Personality, Boku, Charismatic, Cynic, Distrustful, Haraguro, Kind, Mysterious, Ore, Pretending, Proactive, Protective, Refined, Smart, Strange, Wise
Role, Non-blood-related Son, Not a Virgin, Orphan, Wealthy
Engages in, Revenge
Subject of, Homicide
Engages in (Sexual), Group Sex, Outdoor Sex, Sex in Public Places, Sixty-nine
Voiced byKaiou Raku


A beautiful young man who suggested Yuki to get her revenge on Reiji when she was at the height of despair. He even helps her become a "Reiji's type"; a beautiful, sexy woman. Yuki doesn't know why he wishes to help her so much...

[Based on translations of his official website profile.]

Shinohara Reiji
Shinohara Reiji篠原 玲人 
Hair, Black, Parted to Side, Short, Spiky Bangs
Eyes, Grey, Hosome
Body, Muscular, Pale, Young-adult
Clothes, Glasses, Necktie, Shirt, Suit
Personality, Ambitious, Arrogant, Cold-hearted, Cruel, Holds Grudges, Loyal, Ore, Pragmatic, Pretending, Reserved, Selfish, Smart, Stoic, Superficial, Taciturn, Vindictive
Role, Betrothed, Ex-boyfriend, Full Brother, Not a Virgin, Orphan, Submissive Partner
Engages in, Infidelity, Murder, Revenge
Subject of, Insanity
Engages in (Sexual), Group Sex, Sex in Front of an Audience, Sex in Public Places
Voiced byHigeuchi Waruta


He has a strong desire to join the elite, and only ever thinks about rising up the ranks in the company he works at. When Yuki and Reiji first started dating, he was kind to her, but as time went by, his treatment of her became callous and careless. He claimed that he needed money for various "work reasons", which resulted in Yuki working hard to support him. As soon as he was able to get engaged to his boss' daughter, he abruptly breaks things off with Yuki.

[Based on translations of his official website profile.]