Break Chance Memento

Break Chance Memento
TitleBreak Chance Memento
AliasesBC Memento, BCM
LengthShort (2 - 10 hours)
DeveloperCyanide Tea
Publishers Cyanide Tea
 Cyanide Tea & Marcel Weyers


Four years ago, Shuuki's world was turned upside-down when his twin sister, Fuyuka, died in an accident at just 12 years of age. His parents blamed her death on the negligence of their eldest son, Natsume. The Amamiya family was never the same.

One fateful morning, Shuuki stumbles across the gruesome sight of his brother Masaharu's corpse. When all hope is lost and Shuuki must come to terms with the fact that his brother has been murdered, the mysterious Kyousuke appears before him with a proposition:

"Do you want to bring your brother back? To fix your family's broken relationship? You can…if you learn to travel through time."

Before he knows it, Shuuki is caught in a plot far more sinister than he could have ever imagined. He learns that the key to traveling through time and stopping innocents from being killed lies in mementos: items that are a link between the past, future, and present.

[From the Official Website]

Brother Support Character 3.0 Time Travel 3.0 Boy x Boy Romance Only 3.0 Homicide 3.0 Boy x Boy Romance 3.0 Science Fiction 3.0 School Dormitory 3.0 Passage of Time 3.0 Slice of Life Drama 3.0 Family 3.0 Murder Mystery 3.0 Multiple Endings 2.5 Multiple Protagonists 2.5 Modern Day Earth 2.5 ADV 2.5 Protagonist with Sexual Experience 2.5 Multiple Route Mystery 2.5 High School 2.5 Bad Endings with Story 2.5 Lazy Hero 2.0 Fear of Death 2.0 Future Earth 2.0 Romance 2.0 Male Protagonist 2.0 Violence 2.0 Graphic Violence 2.0 Descriptions of Violence 2.0 Bloody Scenes 2.0 Gore 2.0 Life and Death Drama 2.0 Late Branching Plot 2.0 Modern Day Japan 2.0 No Sexual Content 2.0 Map Movement 2.0 Twin Sister Support Character 2.0 Brief NVL Scenes 2.0 Slice of Life 2.0 Branching Plot 2.0 Death of Hero 2.0 Date Display 2.0 Athlete Hero 2.0 Unlockable Choices 2.0 Sexual Innuendo 2.0 Ren'Py Engine 2.0 Unlockable Bonus Content 2.0 Bisexual Hero 2.0 Character Profiles 2.0 Protagonist with a Sprite 2.0 Friendship Ending 2.0 Bisexual Protagonist 2.0 Achievements 2.0 No Opening Movie 2.0 Proactive Protagonist 2.0 Friendship 2.0 Protagonist that's Feigning Idiocy 2.0 Protagonist with a Face 2.0 Side Images 2.0 Lots of Event CGs 2.0 Osananajimi Hero 2.0 Unlockable Side Stories 1.5 Horror 1.0 Promiscuity 1.0 Super Deformed CG's 1.0 Student-Teacher Romance 1.0 Depression 1.0 Basketball 1.0 More Than Seven Endings 1.0 School Sports Club Member Hero 1.0 Cats 1.0 Love Triangle 1.0 Brother/Brother Incest 0.5 Skip Scenes 0.5 Harem Ending 0.5

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Shuuki Amamiya
Shuuki Amamiya天宮秋希 
AliasesShuu-chan, Shuu
MeasurementsHeight: 178cm, Weight: 61kg
Birthday25 November
Hair, Black, Blond, Blunt Bangs, Dyed, Multiple Braids, Straight, Waist Length+
Eyes, Cyan
Body, Androgynous, Pale, Slim, Teen
Clothes, Blazer, Bracelet, Dog Tags, Earrings, Hoodie, Pendant Necklace, Ring, School Uniform
Personality, Blunt, Selfish, Sharp-tongued, Stylish
Role, Bad Student, Bisexual, Ex-boyfriend, Full Brother, High School Student, Not a Virgin, Roommate, Schoolmate, Son, Twin Brother, Younger Brother
Engages in, Time Travel
Subject of, Grief, Nightmares


A fashion-conscious primadonna whose claim-to-fame is dating close to 25% of the student body (male and female). Shuuki has the nasty habit of falling in love with someone, bothering that person until the feelings are mutual, and then quickly losing interest and either dumping them or being so detached that he himself gets dumped. He is bright and quick-witted, but has a sharp tongue, tending to be blunt. Most of his peers find him hard to deal with. Though he loves his brothers, he goes out of his way to try to annoy them--just so they'll remember him.

Main characters

Chiaki Sorata
Chiaki Sorata空田稚空 O
MeasurementsHeight: 151cm
Birthday19 April
Hair, Black, Curly, Shaggy, Short
Eyes, Violet
Body, Average Height, Pale, Slim, Teen
Clothes, Glasses, Hairpin, Polo Shirt, School Uniform, Sweater, Vest
Personality, Hardworker, Short-tempered
Role, Childhood Friend, Grandson, High School Student, Roommate, Schoolmate
Engages in, Sarcasm, Teasing
Subject of


A childhood friend of Natsume's, Chiaki is known for his diminutive stature--that is, he's incredibly short for his age. Those who are stupid enough to point that out to him, however, are immediately subjected to his wrath. Chiaki is somewhat short-tempered and a hard worker who dislikes lazy people and being distracted, so it's a wonder how he and Natsume ever got to be friends. He likes teasing people and has a dry sense of humor. He's also oddly clingy and touchy-feely, but only around those he knows well and/or are not Natsume. Chiaki becomes Shuuki's dorm roommate.

Kyousuke Fujishima
Kyousuke Fujishima 
AliasesKyou, Kyou-chan
Hair, Brown, Shaggy, Shoulder-length
Eyes, Amber
Body, Pale, Slim, Teen
Clothes, Futuristic Suit
Personality, Mysterious
Role, Mentor
Engages in, Sarcasm, Time Travel


Kyousuke comes from the future, about 10 years or so ahead. He is the one who gives Shuuki the time machine. Though he can't interact with Shuuki face-to-face that often, he often sends Shuuki messages and helps him through this whole ordeal. He doesn’t like to reveal much about himself, but it seems that he genuinely cares about the Amamiya family and wants very much to help them. He is somewhat sarcastic and mysterious, and rather difficult to understand.

Masaharu Amamiya
Masaharu Amamiya天宮政春 
AliasesMasa, Masa-nii
MeasurementsHeight: 181cm, Weight: 70kg
Birthday27 July
Hair, Black, Blond, Dyed, Short
Eyes, Amber
Body, Muscular, Pale, Tall, Teen
Clothes, Scarf, School Uniform, Sports Jersey, Sports Shoes
Personality, Hardworker, Protective, Serious, Tsundere
Role, Full Brother, High School Student, Honor Student, Older Brother, School Athletic Club President, Schoolmate, Son, Younger Brother
Engages in, Basketball, Unarmed Fighting
Subject of, Avoidable Death, Grief, Homicide


Growing up, Masaharu's always felt too normal compared to his brothers and ended up with a need to set himself apart from "the two weirdos". In truth, he genuinely loves and cares for the both of them, no matter how annoying or embarrassing he may find them, but expressing said love and care is a different matter altogether. Ever since he discovered his natural talent for sports, he's been putting most of his effort into that. Masaharu is the captain of the basketball team, even though that position is normally reserved for seniors--a testament to his ability.

Natsume Amamiya
Natsume Amamiya天宮夏目 
AliasesNatsu, Aniki, Ani-ue
MeasurementsHeight: 181cm, Weight: 76kg
Birthday24 January
Hair, Black, Blond, Curly, Dyed
Eyes, Green
Body, Pale, Slim, Tall, Teen
Clothes, Belt, Headphones, Hoodie, Polo Shirt, School Uniform
Personality, Bookworm, Lazy, Secretive, Sleepyhead, Smart
Role, Bad Student, Childhood Friend, Employee, Full Brother, High School Student, Older Brother, Part-time Worker, Roommate, Schoolmate, Son, Student Club President
Engages in, Cooking, Reading, Sleepwalking
Subject of, Grief


The first thing everyone says about Natsu is that he has a very cold, aloof personality. It's exceedingly rare to see him angry, for him to even raise his voice or care much about anything. He falls asleep incredibly easily and it takes his brothers, or the few other people close to him, to keep Natsu interested enough in the present to stay awake. While he is intelligent, he doesn't put forth much effort towards things that he doesn't like--which is almost everything. That said, once he finally gets attached to someone, he becomes affectionate to the point of ridiculousness.

Yukinari Hosokawa
Yukinari Hosokawa細川行成 
AliasesYuki, Yukichi
MeasurementsHeight: 163cm
Birthday11 July
Hair, Short, White
Eyes, Brown
Body, Average Height, Olive, Slim, Teen
Clothes, Cardigan, School Uniform, Shorts
Personality, Daydreamer, Immature
Role, Ex-boyfriend, Full Brother, High School Student, Older Brother, Roommate, Schoolmate, Wealthy, Younger Brother
Engages in, Teasing
Subject of


Yukinari grew up in a strict, old-fashioned family that maintains influence and power in both local and national government. There's a certain amount of privilege coming from that background, but mostly Yukinari feels a burden of restrictions, keeping-face, and achieving academically. Yukinari is easily distracted, tends to dream, and is not very self-conscious. He loves the ocean and sailing. A bit masochistic, he enjoys annoying the people he likes until they snap at him. He is physically sensitive, so he doesn't like to be touched randomly. Masaharu's classmate and later, Natsume's dorm roommate.

Side characters

Mrs. Sorata
Mrs. Sorata 
Hair, Black
Eyes, Brown
Body, Old, Pale, Slim, Wrinkles
Clothes, Kimono
Role, Grandmother


Chiaki's grandmother and Sumire's would-be mother-in-law, she gets a fresh change of perspective after living alone for a few years. She was never truly a malicious person, simply bad at communicating and a bad judge of character. Eventually she comes to realize that Sumire wasn't some harpy intent on stealing her son and ripping her family apart. While their relationship is still a little shaky, Mr. Sorata has made great strides towards repairing the relationships that she thought she ruined. Sumire and Chiaki both visit her often and she keeps her health even into her 80's and 90's.

Hair, Brown, Short
Eyes, Red
Body, Pale
Role, Ex-boyfriend, High School Student, Homosexual, School Literature Club President
Engages in, Coming Out


One of Shuuki's many exes and the vice president of the literature club while in his third year of high school. Ryou suffers more than he lets on from the break-up, coupled with his confused feelings and thoughts towards his own sexuality. He eventually comes out as gay and drafts many apology letters to Shuuki that he can't bring himself to send. The two of them bump into each other by chance one day after they've both graduated from high school and talk things over, which finally gives Ryou the closure to forgive himself, forgive Shuuki, and move on. He also goes into law and he and Chiaki end up at a lot of the same seminars together.

[From in-game bio]

Sumire Sorata
Sumire Sorata 
Hair, Black, Straight, Waist Length+
Eyes, Violet
Body, Pale, Slim, Young-adult, Younger Appearance
Clothes, Cardigan, Glasses, Jeans
Items, Bag
Personality, Kind
Role, Mother, Novelist
Subject of, Grief


Sumire began dating Chiaki's father during high school, and due to unforeseen circumstances, she conceives Chiaki at the early age of 17. <hidden by spoiler settings>

Make an appearance

Hair, Brown, Long, Side Tail
Eyes, Brown
Body, Pale, Slim, Young-adult
Clothes, Apron, Hair Tie
Personality, Strict
Role, Dormitory Manager, Homosexual, University Student


The Meisei boys' dorm mother. Hisako is 20 during the events of the story. A lesbian who hates her duties as the dorm mother for a bunch of dirty teenagers, she quits her job while in her last year of college.

[From the in-game bio]

Hair, Brown, Long, Parted to Side, Straight
Eyes, Blue
Body, Pale, Slim, Young-adult
Clothes, Earrings
Items, Cigarette
Personality, Low Self-esteem
Role, Ex-girlfriend, Kindergarten Teacher
Engages in, Smoking
Subject of


Yukinari's older ex-girlfriend whom he dated for almost two years while he was in middle school. After her suicide attempt, she and her family moved away for a change of pace and she started to see a therapist regularly. This proved to be very positive for her, but it was only a few years later-at the end of the game- that she finally plucked up the courage to send a letter to Yukinari, formally apologizing for the abuse that she put him through. While the two will never be as close as they once were, they've patched things up and still send each other letters from time to time. She is doing well in Hokkaido and goes on to work as a kindergarten teacher.

[From in-game bio]