5 Shocking Secrets Revealed About 'Very Private Lesson Part 3' (Kyokasho Ni Nai! 3)

The 2017 Japanese film, Very Private Lesson 3, known in Japan as Kyokasho ni nai! 3 (教科書にないッ! 3), continues to be a hot topic in December 2025, years after its release, due to its controversial plot and its place in a long-running, provocative manga adaptation series. This third installment, which premiered on June 10, 2017, plunges deeper into the complicated and often scandalous life of a high school teacher and his unique living arrangement with a female student, pushing the boundaries of the romantic comedy genre with its "intense" content. The film is a live-action adaptation of the popular manga series by Kazuto Okada, known for its focus on taboo subjects and dramatic romantic entanglements.

The enduring curiosity surrounding Private Lesson Part 3 stems from its central, high-stakes premise: the teacher, Tairaku Arihiko, must navigate a love triangle that includes a fellow colleague and the student who has unexpectedly moved into his home. The film’s 81-minute runtime is packed with the dramatic tension and comedic mishaps that fans of the original manga and earlier films have come to expect, solidifying its status as a notable entry in the Japanese cinema landscape.

Full Biography and Profile of the Main Cast

The success and controversy of Very Private Lesson 3 rest heavily on the shoulders of its lead actors, Baba Ryoma and Morikawa Ayaka, both of whom bring significant experience from different facets of the Japanese entertainment industry. Their detailed profiles offer a look into the careers that led them to this high-profile, sensitive role.

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Baba Ryoma (馬場 良馬) - Tairaku Arihiko

• Role in Film: Tairaku Arihiko (The Teacher)
• Birthdate: December 15, 1984 (Age 40 as of late 2025)
• Birthplace: Chiba Prefecture, Japan
• Height: 180 cm
• Affiliation: Toki Entertainment
• Career Highlights: Baba Ryoma is a prolific Japanese actor, widely recognized for his work in the tokusatsu genre (special effects films/series). He is most famous for portraying Ryuji Iwasaki/Blue Buster in the *Tokumei Sentai Go-Busters* series. His other notable roles include appearances in the *Kamen Rider* franchise, such as Ryusuke Otaki in *Kamen Rider Amazons* and Enmusubi Match in *Kamen Rider Zero-One*. His diverse filmography showcases his range, moving from family-friendly action to more mature cinema like the *Kyokasho ni nai!* series.

Morikawa Ayaka (森川彩香) - The Student

• Role in Film: The Student/Pupil
• Birthdate: March 24, 1996 (Age 29 as of late 2025)
• Birthplace: Saitama Prefecture, Japan
• Height: 160 cm (or 164cm, sources vary)
• Blood Type: A
• Career Highlights: Morikawa Ayaka began her career in the highly competitive world of J-Pop as a member of the iconic idol group AKB48, where she was active from 2010 to 2015. Following her graduation from the group, she transitioned into acting, taking on roles in films like *Not in Textbooks 4* and *Not in Textbooks 3* (the *Kyokasho ni nai!* series). Her involvement in this series marks a significant shift in her public image from pop idol to mature film actress.

The Controversial Core Plot of Kyokasho ni nai! 3

The narrative of Very Private Lesson 3 is built on a foundation of scandalous romantic comedy, a formula that has kept the *Kyokasho ni nai!* series relevant for decades. The film is a direct continuation of the events from the previous installments, maintaining the high level of emotional and ethical complexity.

1. The Unconventional Living Arrangement

The central premise revolves around Tairaku Arihiko, a teacher at the all-girls Otome Girl's High School, who is forced into a highly unconventional living situation. His student, whose name is Aya in the original OVA series, moves into his home. This arrangement immediately creates a massive ethical dilemma and sets the stage for all the subsequent romantic and comedic conflict. This close proximity is the engine driving the film's "intense" content and the primary source of the "private lesson" theme.

2. The Complex Love Triangle

Tairaku's life is further complicated by a classic love triangle. He holds a crush on a fellow teacher, Ms. Satsuki, a colleague he genuinely hopes to marry someday. The presence of the student in his home, however, constantly interferes with his attempts to pursue a normal, professional relationship with Ms. Satsuki, forcing him to balance his professional aspirations with his chaotic personal life.

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The Legacy and Topical Authority of the Kyokasho ni nai! Series

To understand Private Lesson Part 3, one must appreciate the broader context of the *Kyokasho ni nai!* (Not in Textbooks!) franchise. This series, which spans manga, Original Video Animations (OVA), and multiple live-action films, is a cornerstone of a niche genre in Japanese entertainment.

3. Origin in Kazuto Okada’s Manga

The entire film series is a live-action adaptation of the original manga created by the acclaimed artist Kazuto Okada. Okada is known for his signature style that blends humor, drama, and sexually charged themes, often exploring the complexities of forbidden or taboo relationships. The manga’s success provided the blueprint for the tone and content of all the subsequent adaptations, including the 2017 film.

4. A Franchise Spanning Decades

The franchise has a long history, with the original manga and subsequent anime OVA series dating back to the late 1990s. The 2017 film, *Very Private Lesson 3*, is part of a deliberate effort to bring this popular and provocative IP to a new generation of viewers through a fresh live-action format, demonstrating the enduring appeal of the teacher-student dynamic in Japanese storytelling. The film is officially the third in a sequence of live-action adaptations, each building upon the continuing saga of Tairaku Arihiko.

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5. LSI Keywords and Related Entities to Explore

For fans and researchers looking to delve deeper into the world of Very Private Lesson 3, a number of related entities and keywords can unlock more content and context. These terms help establish topical authority around the film:

• Manga Artist: Kazuto Okada
• Original Japanese Title: Kyokasho ni nai! (教科書にないッ!)
• Main Character Name: Tairaku Arihiko
• Key Supporting Character: Ms. Satsuki (The fellow teacher)
• Thematic Keywords: Student-Teacher Relationship, Romantic Comedy, Japanese Erotica, Live-Action Adaptation, Otome Girl's High School.
• Related Works: *Very Private Lesson 4* (The sequel), *Tokumei Sentai Go-Busters* (Baba Ryoma's other major work), AKB48 (Morikawa Ayaka's former group).

In summary, Very Private Lesson 3 is more than just a standalone film; it is a significant chapter in a long-running, controversial, and popular franchise. Its success highlights the Japanese entertainment industry's willingness to explore complex and often ethically challenging romantic themes, driven by the star power of actors like Baba Ryoma and Morikawa Ayaka. Despite its 2017 release, the film's themes and cast continue to generate interest in the current media landscape, making it a timeless piece of provocative Japanese cinema.