Writing
Yutaka Sō
Apparently it is a pseudonym used individually and collectively by various people working around the director and producer Kan Mukai on his films and at his production companies.
Known for

Blue Film Woman

The Bite
Diary of a Violated Virgin—Female

Savaged and Ravaged

Forbidden Technique to Tie a Lady
Modern Female Ninja: Flesh Hell
Shameful Technique
Sexy Partners
Girls' Dormitory
Aru aibu!! Zubunure

Chikan zurousu dorobô
Night Office Lady Diary: Flesh Doll

Monzetsu kôkyû toruko: Jun nama arai

Jitsuroku: Maruhi tsûkin chijo nikki
Dark Japanese History: Virginity and Rape
Zeppin no tsubo
Movie credits · 123

Class Reunion

Last Dance: Divorce Ceremony

Hometown

Noctiluca

Drop Out: Supple Female Leopard

Female Punisher Zebra 2: Action Edition

Female Punisher Zebra: Sexy Edition
Furusato poruno chikubi korogashi
Red Laboratory: Please Bully Me

Hometown Porn Girl 18! Seeding Festival
Crying Rope, Missing Black Hair
Apartment Wife: Daytime Prostitute

The True Story of the Element

Female Teacher: Violated to Death

Ginkô OL: Nikutai kôza

Mantle Sex: Kill Me in Bed
Groper Bullet Train

Telephone sex: Momoiro ôshin

Night Nurse: The Pleasure Injection

Office Lady at Night: Tongue Licking

Women's Dormitory (Sexual) Crimes
Soft Skin Lynching

The Bizarre Rope Ritual
Daylight Assault Game

Lewd Photo!! White Coat and Rope
Tattooed Slave Wife
Complete Collection of Naked Women's Pleasure
Mrs. Peeling
The Crazy Widow
New Edition: The Complete Collection of Turkish Japan
Agony!! Pacifier Widow
The Scream of a Female Doctor
SM ketteiban: Kusari to mesu inu

Pleasure Doll

Tortured Women's Dark History
Kin'yôbi no mesu inu

Groper Hell
Bizarre Rose Makeup

Virgin blues: Nurete sayônara
Queen of Gropers
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