Yujiro Ishihara had become the face of the “Sun Tribe” movement thanks to roles inspired by his brother Shintaro’s novels including the seminal Crazed Fruit in which he starred opposite his later wife, Mie Kitahara. Tomotaka Tasaka’s A Slope in the Sun (陽のあたる坂道, Hi no Ataru Sakamichi), adapted from the novel by Yojiro Ishizaka, is a much less frenetic affair than Nakahira’s famously intense youth drama, but retains the Sun Tribe’s world of purposeless youth whose inherited wealth has driven them to a life of listless ennui. Like Crazed Fruit, Slope in the Sun is the story of two brothers chasing the same girl, only this time one looks bad and is really good, while the other looks good but is really no good at all.
Beginning on the titular sun beaten slope, the film opens with a young woman, Takako (Mie Kitahara), entering the frame as she searches for an address on a piece of paper she is carrying. She finds the house – a large Western-style mansion, but is prevented from entering by a young man who mistakes her for a saleswoman and instructs her to use the tradesman’s entrance. The young man, Shinji (Yujiro Ishihara), continues to taunt her with lewd language before poking at her breast. Takako tries to leave but is persuaded to come inside to meet the lady of the house and the young woman, Kumiko (Izumi Ashikawa), whom she has come to tutor.
The Tashiro household is a strange one. There are three almost grown up children – oldest brother Yukichi (Yuji Odaka) who is a medical student, middle brother Shinji who is a painter, and the youngest daughter Kumiko who is approaching the end of high school and is a little over sensitive about a mild limp which is the consequence of a childhood accident. Takako nearly turns the job down when she realises that the family want less a teacher to help with Kumiko’s studies, than a kind of big sister to help her navigate her way into the adult world, but eventually warms to the Tashiros and decides to give it a go. A college student in need of money, Takako is currently living in a boarding house where she is friends with the older lady next door, Tomiko Takagi (Hisako Yamane), and her 18 year old musician son Tamio (Tamio Kawachi).
In contrast to the earlier Sun Tribe films, A Slope in the Sun is much more subdued though it does maintain an upperclass atmosphere filled with bored young people who struggle to find purpose in their lives through having no particular economic or social worries thanks to the protective cushioning of their wealth. The central issue is a common one to the familial melodrama – middle child Shinji has always felt disconnected from his family and has discovered that the woman who raised him is not his birth mother. He wants to know the truth of his family history but is also a kinder soul than his outward behaviour may suggest and does not want to hurt anyone or risk destroying the otherwise pleasant enough family life he enjoys as a Tashiro.
As expected coincidences abound though the truth is obvious seconds after Takako tells someone the name of her new employer causing them to gasp and draw pale with shock. It seems that everyone in the family already knew that Shinji is only a half brother except Shinji himself – their overcompensation in treating him kindly was the initial tipoff for his suspicions, but this question of blood relation turns out to have a surprising dimension. Oldest brother Yukichi is, outwardly, the model son – handsome, clever, gentlemanly, but on closer inspection his veneer of respectability turns out to be just that. The boys’ mother, Midori (Yukiko Todoroki), knows this well and partly blames herself for allowing Shinji to take the blame for a childhood accident rather than forcing her own son to confess. For all his seeming goodness, Yukichi is an amoral coward, womaniser, and habitual liar whereas there’s a kind of honesty in Shinji’s lewd speech and even in his own lies which he indulges partly out of a sense of smug superiority, as Midori puts it, but also because of the inferiority complex which has marred his life as he feels himself somehow lesser than either of his siblings.
Takako vacillates between the two brothers, taken in by the manipulative Yukichi but strangely drawn to the provocative Shinji. Unlike Nikkatsu’s other youth films, Slope in the Sun ends on a note of happy resolution rather than nihilistic suffering as each member of the family is encouraged to embrace their true natures, putting secrets to one side, and becoming closer in the process. Tanaka’s approach is a more classical one than Nikkatu’s usual fare, making use of silent cinema-style closeups and dissolves but veers towards the avant-garde in a brief flashback sequence offered in dreamlike widescreen. Despite the jazz clubs and subplots about misused geishas, this is a more innocent world than the post-war melodrama would usually allow, finding space for happiness and forgiveness in each of the conflicted protagonists once they each agree to submit themselves to the truth and meet the world with openness and positivity.