OASIZ’s “Seikai ga Wakaranai” Produces First Terrestrial TV Drama! “Show Dora presents Seikai ga Wakaranai” – A Unique Near-Future Drama Where “Resurrection AI” Has Become Widespread

Starring Hina Kawata in her first drama role since graduating from Hinatazaka46, airing late night on Friday, September 11, 2026 on ABC TV

OASIZ Inc. (Headquarters: Shibuya-ku, Tokyo; Representative Director: Yu Eto; hereinafter “OASIZ”), which supports brand marketing through SNS and vertical videos, is pleased to announce that the short drama account “Seikaiwakaranai” (I Don’t Know What’s Right), which the company plans, produces, and operates, has won the Grand Prize at the “Mynavi Short Drama Award 2026,” and based on this prize, will produce the terrestrial drama “Short Drama presents Seikaiwakaranai,” which will air on ABC TV from 0:24 AM on Friday, September 11, 2026.

This terrestrial drama production marks OASIZ’s first challenge in this format. Leveraging the expertise gained from managing short dramas for numerous companies, we have adapted the unique worldview of “Seikaiwakaranai” to the terrestrial broadcast format. Starring Hina Kawata in her first drama role since graduating from Hinatazaka46, the story is set in a near future where “deceased resurrection AI” has become widespread, depicting a “story with no right answer” that questions how humans should engage with AI.

■ About “Short Drama presents Seikaiwakaranai”

OASIZ has been pursuing a new form of entertainment that deeply penetrates viewers’ daily lives, starting with SNS and vertical videos. “Seikaiwakaranai” is OASIZ’s flagship IP account, and has continued to create works that resonate with the emotions of young people living in an “era where the right answer is unclear.”

This time, as part of producing the terrestrial TV drama that came as a prize for winning the Grand Prize at the “Mynavi Short Drama Award 2026,” we have created a drama work set in a near future where “deceased resurrection AI” has become widespread, cutting into the threats of modern society where AI is deeply embedded in daily life.

Title	Short Drama presents Seikaiwakaranai
Broadcast Station & Air Time	ABC TV September 11, 2026 (Friday) 0:24 AM – 0:54 AM (Kansai local)
Catch-up Streaming	After airing on ABC TV, available on TVer and ABEMA
Cast	Hina Kawata, Tomomi Nakai, Yuri Umakoshi, Hiroaki Kawazure, Aya Nishibori, Junko Sakurai, Unparunpa (OASIZ affiliated), and others
Screenplay	Tomoki Shirakawa (OASIZ_Seikaiwakaranai)
Director	Mamoru Shinoda (OASIZ_Seikaiwakaranai)
Production	Progress Inc.
Production & Copyright	ABC TV
Original Account Management	OASIZ Inc.

■ Synopsis

Misaki Matsuzaki (Hina Kawata) is a high school student living with her mother Michiko (Junko Sakurai). However, the real Michiko died three years ago, and the current Michiko is a “deceased resurrection AI” generated from photos and chat history with AI during her lifetime. Misaki had been hiding this from others, but her older sister Nanami (Tomomi Nakai), who came to visit as a surprise on her birthday, discovers the secret. Worried about the high cost of the deceased resurrection AI, Nanami urges Misaki to wake up to reality, but Misaki insists, “I can’t live without Mom.”

The next day, AI Michiko goes out on a date with her boyfriend wearing a sailor uniform, which she said was her dream. In fact, the deceased resurrection AI also reflects aspects of the person’s personality that they kept secret from their family during their lifetime. The mother had secrets she couldn’t tell her daughter, and Misaki is shocked…

Then one day, an official from the Existence Verification Bureau, a government agency that manages households resurrecting the deceased with AI, visits Misaki’s home. They inform Misaki of suspected fraudulent receipt of survivor’s pension—

Eventually, an unexpected situation strikes Misaki. And in fact, her sister Nanami also has a “secret” she’s hiding from Misaki!

■ Highlights

◆ Lead actress Hina Kawata’s drama debut, with a gathering of unique actors

Hina Kawata plays Misaki, a high school girl living with her mother generated by “deceased resurrection AI.” She passionately portrays a role that faces various conflicts as the consequence of resurrecting her mother. Along with Junko Sakurai as AI Michiko and Tomomi Nakai as her sister Nanami, the cast includes Yuri Umakoshi, Hiroaki Kawazure, and Aya Nishibori, who won the Performer Award at the “Mynavi Short Drama Award 2026,” as well as OASIZ-affiliated creator Unparunpa, all bringing the story to life.

◆ “Seikaiwakaranai” questions AI and modern society on terrestrial TV

The short drama account “Seikaiwakaranai” has continued to release works that resonate with the emotions of young people living in an “era where the right answer is unclear.” Following “Holy Chat,” which won the Grand Prize at the “Mynavi Short Drama Award 2026,” this work is set in a near-future Japan where deceased resurrection AI has become widespread, depicting a “story with no right answer” that all modern people should confront.

◆ SNS tie-in projects also underway

Prior to the drama broadcast, a vlog account will launch on SNS to share behind-the-scenes production content and comments from cast and staff. Content that allows viewers to enjoy the drama more deeply will be released sequentially.

■ Comments

◆ Lead Actress Hina Kawata Comment

When I was confirmed for the role, I felt a lot of nervousness, but I was very happy to be involved in this work!

Reading the script, there were scenes that made me think deeply because of this AI era we live in, and I myself felt many things through the role of Misaki.

During filming, I worked on each scene while receiving lots of advice from the director. I hope you’ll watch while thinking about what you would do if you could meet an important person again through the “deceased resurrection AI” service.

◆ Director Mamoru Shinoda Comment

Just as we cannot go back to an era without smartphones, the world can no longer return to an era without AI.

In this era, how will we engage with the technology of AI?

What does it mean to “live” in this era?

I directed this work so that everyone could feel these questions without answers.

Unlike short dramas, we could use longer time for each cut, so I was able to employ many directing techniques that can only be done with long single takes, such as focusing on abnormalities creeping into daily life and emotional states.

Also, unlike short dramas, shooting in horizontal format allowed us to arrange people side by side

and properly place props in the background, so I think the amount of information in each cut has increased significantly.

While having a different flavor from the short drama “Seikaiwakaranai,” I think you’ll feel “this is indeed ‘Seikaiwakaranai'” when you finish watching. Please don’t miss a single second until the very end.

◆ Screenwriter Tomoki Shirakawa Comment

The trigger for choosing this theme was when Director Shinoda discovered the “AI that lets you talk to the deceased” that was released in China and became a hot topic.

We valued the axis of “updating how we see the world,” which was appreciated at the Mynavi Short Drama Award, and expressed a worldview that could never be depicted in a short drama.

I was thinking of creating a work that could balance the engaging presentation that is the strength of short dramas with the utilization of “pauses” unique to horizontal dramas.

This is a work packed with surprises for viewers and a thesis on humanity’s future.

Look forward to the last second.

■ Broadcast & Streaming Information

Program Title	“Short Drama presents Seikaiwakaranai”
Broadcast	ABC TV September 11, 2026 (Friday) 0:24 AM – 0:54 AM (Kansai local)
Catch-up Streaming	After airing on ABC TV, available on TVer and ABEMA
Official Website	https://www.asahi.co.jp/seikaigawakaranai/

■ About “Seikaiwakaranai”

“Seikaiwakaranai” is a vertical short drama account originating from TikTok, planned, produced, and operated by OASIZ Inc. It is one of OASIZ’s flagship IP accounts, and has continued to depict the emotions, friendships, romance, SNS, family, job hunting, and dreams of people in their teens and twenties living in an “era where the right answer is unclear” through short dramas.

Rather than denying “the absence of right answers,” it poses this uncertainty to the world through short dramas, advocating the importance of deriving one’s own right answer. In 2026, it won the Grand Prize at the “Mynavi Short Drama Award 2026,” and is now leveraging that prize to challenge the terrestrial drama format for the first time.

Account Name	Seikaiwakaranai
Platform	TikTok: https://www.tiktok.com/@seikaiwakaranai Instagram: https://www.instagram.com/seikaiwakaranai/ YouTube: https://www.youtube.com/@seikaiwakaranai
Total Views	Approximately 500 million views *As of August 2026 *Total across TikTok, Instagram, and YouTube accounts
Planning, Production & Management	OASIZ Inc.

■ Accepting Inquiries for Corporate Tie-ups and Collaboration Content

OASIZ accepts requests for production of tie-up short dramas and collaboration content with companies using our own IP accounts including “Seikaiwakaranai.” Please utilize them for product/service awareness expansion, branding, and communication strategies starting from vertical short dramas.

For inquiries about corporate tie-ups and collaborations, please submit through the OASIZ Inc. contact form.

▶ https://oasiz.org/contact

■ OASIZ Actively Recruiting

We are currently recruiting a wide range of colleagues to challenge together on the frontlines of the vertical short video market, including creative directors, editors, HR, and PR.

Through the release of this video, OASIZ will create contact points with culturally fitting talent, while promoting further strengthening of brand marketing support starting from SNS and vertical videos, expansion of creator production business, acceleration of original IP development, and creation of a new economic sphere centered on vertical videos.

▶ Recruitment Information: https://herp.careers/v1/oasizinc

■ About OASIZ

Starting from SNS and vertical videos, OASIZ provides comprehensive support for brand marketing that leads to awareness expansion and sales, from strategic planning to production and management. We provide SNS account management support and marketing support utilizing vertical videos, boasting achievements of over 5.5 billion total views and sales contributions. In 2026, our own operated account “Seikaiwakaranai” won the Grand Prize at the “Mynavi Short Drama Award 2026,” and our planning and production capabilities in the vertical short drama field were widely recognized. Going forward, we will promote the development of original IP starting from vertical videos and the creation of a new economic sphere.

For inquiries about creator tie-ups and SNS marketing, please feel free to contact OASIZ.

Inquiries regarding video production and casting: https://oasiz.org/contact

【Company Overview】

Company Name: OASIZ Inc.

Established: October 2021

Representative Director: Yu Eto

Location: AMBRE 3/4F, 3-15-7 Sendagaya, Shibuya-ku, Tokyo

Website: https://oasiz.org/

・Official SNS

OASIZ Official Instagram: @oasiz_company (https://www.instagram.com/oasiz_company/)

OASIZ Official note: https://note.com/oasiz