Is insanity hereditary? Shougo Mikadono's beginning to think so, because the terms of his late father's will seem crazy and following them may drive Shougo bonkers as well. Oh, it sounds simple at first: before Shougo can claim his VERY large inheritance, he just has to start attending a certain new school and find a nice girl to marry. It's a little unromantic, but perfectly do-able, right? After all, all the girls seem quite friendly, so all Shougo has to do is find one he has something in common with. Except, and here's the kicker, it turns out that Shougo has WAY too much in common with one of them, because she's actually his long-lost sister! And he has no idea which one she is! Will Shougo meet and court his Miss Right without committing something very morally wrong? Can he find his future bride without slipping into the wrong set of genes? And if his little sister does reveal herself, just how much will be revealed and under what circumstances?

Three sisters live together in a large house in the city of Kamakura. When their father – absent from the family home for the last 15 years – dies, they travel to the countryside for his funeral, and meet their shy teenage half-sister. Bonding quickly with the orphaned Suzu, they invite her to live with them.

When a junior in college moves into his aunt's house, temptation is almost too much with all of the women living there. But feelings grow between them.

After several years without contact, Martijn visits his sister Daantje, who just started to live on her own in Amsterdam. He tells her he is going to make a documentary from her life, and enters her home life with a video camera.

After returning to her childhood home, young nun Colleen finds her old room exactly how she left it: painted black and covered in goth and metal posters. Her parents are happy enough to see her, but her brother is living as a recluse in the guesthouse since returning home from the Iraq war.

Berlin playwright Lisa follows her husband Martin to Switzerland, where he manages a private school. However, when her twin brother Sven’s leukaemia begins to wreak havoc on his health, she decides she must return to her roots, which has significant consequences for her relationship.

Yori and his twin sister Iku used to be very close as children but lately Yori has grown colder toward Iku and is always eager to stay away from her. Iku was confused by Yori's attitude. Actually Yori is in love with Iku and that forbidden love is causing Yori sleepless nights since Yori and Iku are sharing the same room with bunk beds. Yori tried to ease his intense desire for Iku by bedding Iku's best friend. He had even applied to attend a boarding school in another city to take him far away from Iku. Yori lost his resolve to stay quiet about his feelings when Iku started to talk about having a boyfriend and going on dates. Now Yori want to have his little sister and he confessed. Iku loves her big brother and wanted them to stay together, so Iku is willing to anything to keep them together. But Yori wanted to have Iku as a lover, not as a sister loyal to her twin.

Mr. and Mrs. Ho are longing for a grandson. Their son, Ho Chieh and daughter-in-law, Wan Ping, come home from abroad. Wan Ching, the little sister-in-law, is a nurse and comes with Mrs. Ho to meet her sister. At the airport, old Mrs. Ho mistakenly hears that her daughter-in-law is pregnant. After that, Ho Chieh has to attend a business party. However, his wife is not free for it so he begs his little sister-in-law to go as his wife. Wan Ching turns out to be a hit with the guests. In order to please his mother, Chieh asks little sister-in-law to take Wan Ping to the hospital for a pregnancy test and get a false positive report. But through a mistake, Wan Ping gets the report of a sterile woman. She is saddened by it but everyone lies to the old people in order to spare them the disappointment...

Min-soo is at home since his discharge from the military. His sister Soo-min and her friend So-ri come home. Min-soo is surprised to see the 'little girl' he once knew had grown up to be such a mature young lady. One day, Min-soo is watching porn when he runs into So-ri. He freezes, but So-ri seduces him, "Want me to satisfy you?"

With her mother's remarriage, Dong-jun lives in his stepfather's house while they are on honeymoon. However, on the first night of living in his stepfather's house, he witnessed his step-siblings, Seol-ah and Do-jin, having sex. Seol-ah and Do-jin are not brothers or sisters, but Dong-jun is shocked at the thought that they are brothers and sisters. That night he dreamed for the first time in years and the next day, Do-jin leaves early and only Dong-jun and Seol-ah were left at home. Dong-jun feels burdened by Seol-ah’s kindness. After a while, Dong-jun, who returned from exercising in the yard, finds Seol-ah taking a shower with the door open. Seol-ah asks Dong-jun to wipe her back. Since they have become families, she suggested for them to shower together, and they had sex.

When Igor was young, he lost his father because of his little sister. He will grow up trying to find his own way of giving a new face to his past.

A young girl flees a traumatic experience and finds comfort and refuge in the aurora borealis.

Katri's husband has died in the Finnish Winter War. When the Continuation War begins, Katri volunteers to work in a Helsinki military hospital. She is courted by a patient, a poetry-reciting countryman bound to be released from service. In the same time, she dates old school friend Eero who even goes AWOL to be near her. As the war continues, Katri has to make difficult decisions about her life.

A silent film directed by Herbert Brenon

A film about a man who has sex with women who come to his house.

A young girl shows up and tells the woman in the door that they have the same father. The woman invites her to stay.

Bobby is a college freshman and as part of a fraternity prank, he poses as Roberta and becomes pledged into a sorority. There he falls madly in love with Diana. As the game escalates, Bobby finds it increasingly hard to keep his twin identities separate...

Yoo-jin and Myeong-seok receive a phone call from their younger brother Hye-jin in the middle of the night, and Hye-jin, who has suffered from domestic violence, starts living in the same house with her older sister and wife from the next day. Hye-jin feels strange feelings for her brother-in-law, thanks to the tender care of Myeong-seok...