Hakuchū no onna gari

Roman Porno from 1973.

Roman Porno from 1975. Nobutaka Masutomi stars as a doctor who develops a robot love doll to keep a team of Antarctic researchers company, but is displeased with the result despite the product’s success. His desire to create a more realistic doll leads the doctor to model one after an attractive college student (Maya Hiromi). Naomi Oka co-stars, and the screenplay was by Atsushi Yamatoya, who had directed the subgenre’s most notorious cult film, Koya No Dacchi Waifu, in 1967.

Parody tale of notorious Edo-period Robin Hood named Nezumi Kozo (Rat Man), a thief who robs from the rich and showers the money on the poor. In this entry, he's also a drunkard who sometimes forgets why he's broken into the house in the first place. This is especially true if there's a pretty girl to be seduced.

Roman Porno from 1974.

Mika Hino is a sharp-shooting investigator that belongs to the infamous "Gator Branch.” When an executive board member of a trading company is accused of being involved in a bribery, Mika is assigned to keep watch over him. A few nights later her target is found dead outside of his 30 floor office building. With an apparent suicide note as evidence, local police conclude the case as a suicide. Mika’s assignment may have ended in failure, but her mission has just begun...

“Get them all – girls, school credits, money – without an effort!" These are the rumors that freshman Hachirota Kawachi heard about the pep squad; his reasons for instant enrollment. Hachirota may fall a few screws short of a hardware store, but when it comes to yakuza ties, he has plenty. He is the direct descendant and heir to the notorious Akushin-kai gang. Although this was enough information to keep the pep squad seniors quiet, it’s not quite enough for Aota.

Life in the pep squad is all about harsh discipline. Seniors are "Gods", juniors are "Humans", sophomores are "Slaves" and freshmen are treated like "Trash". One sunny day, two freshmen are entrusted with the task to dry out the squadron's flag; the most cherished and symbolic item of the squad. When they accidentally burn a hole in the flag with a cigarette, they blame Aota. Aota attempts to take full responsibility by committing "harakiri", but changes his mind during the process – a deep stab to the stomach has inspired him with a better idea.

Roman Porno from 1975.

Mejika, a pretty Eurasian woman, is hired as a biology teacher at a renowned high school. She is reputed for her iron discipline. But the extremely provocative attitude of Mejika ends up worrying the school's administration. The young woman then sows trouble by revealing the cases of vice and corruption that are legion in this school...

"BLOW THE NIGHT!" Let's Spend the Night Together is a 1983 Japanese docu-drama shot on 16mm film starring actual Yanki gang members as many of the main characters.