Vertical Short Drama "That Girl is My Frenemy" | The one who stole my lover was my best friend— A shocking immoral drama of 6 years of love turning into betrayal, begins streaming on the app "POPCORN"

Key visual for "That Girl is My Frenemy"

On July 3, 2026 (Fri), GOKKO Inc. will begin streaming the vertical short drama "That Girl is My Frenemy" on the app "POPCORN".

This work is an immoral suspense drama about a woman who learns of her lover's engagement via social media after half a year of no contact, only to discover the fiancée is her trusted best friend. She confronts the betrayal while grappling with 6 years of memories.

The lover I trusted. The best friend I trusted.

Those two were united behind my back.

A single engagement announcement received the night before our anniversary.

When did 6 years of love turn into betrayal?

Watch "That Girl is My Frenemy"

◼︎ Synopsis | The night I was betrayed by the two people I trusted most

Tomomi Aihara was approaching her anniversary without any contact from her boyfriend of 6 years, Tsuyoshi Yusaka, for half a year. She had been waiting, believing his words that he wanted to concentrate on work.

However, on the night before their anniversary, she saw Tsuyoshi's engagement announcement on social media. Tomomi was confused, not even knowing who the other person was, but it was soon revealed that the woman was her best friend, Yui Hamaguchi.

Yui stole Tsuyoshi and used her pregnancy to delay her breakup with Tomomi. Upon learning of the betrayal, Tomomi deleted photos and videos of her 6 years with Tsuyoshi and broke up with him.

Finally, she visits Yui's house to return a handkerchief— How will Tomomi, who knows everything, confront her best friend and lover?

◼︎ Highlights

1. Double betrayal by "lover" and "best friend"

The two people she trusted most were together. An immoral drama of pain and empathy, depicting the cruelty of losing both love and friendship simultaneously, and the figure of a woman trying to move forward.

2. A shocking opening with an engagement announcement on social media the night before the anniversary

Learning of her partner's engagement on social media the night before their anniversary— This modern and realistic "worst kind of breakup" instantly grabs the viewer's heart.

3. Erasing 6 years of memories, and the action chosen in the end

Why does Tomomi, after deleting all photos and videos and breaking up, still visit Yui's house? A gripping conclusion condensed into 2 episodes.

◼︎ Main Cast

Shiori Iwanami from "That Girl is My Frenemy"

Shiori Iwanami | Tomomi Aihara

The heroine betrayed by the two people she trusted most: her lover and best friend. Despite being hurt, she tries to confront them with her own will.

KAI Hayasaka | Tsuyoshi Yusaka

Tomomi's lover of 6 years. Behind his half-year silence, he was proceeding with his engagement to Yui, Tomomi's best friend.

KAI Hayasaka from "That Girl is My Frenemy"

Maihana from "That Girl is My Frenemy"

Maihana | Yui Hamaguchi

Tomomi's best friend, who also stole Tsuyoshi. She used her pregnancy to delay her breakup with Tomomi.

◼︎ Work Overview

Title: "That Girl is My Frenemy"

Genre: Vertical Short Drama / Romance, Immoral Suspense

Episodes: 2

Production Year: 2025

Director: Ryo Araki

Screenplay: Ryo Araki

Copyright: © GOKKO

◾️ Vertical Short Drama App POPCORN

Vertical Short Drama App "POPCORN"

"Emotion" in your "spare time." Vertical Short Drama App "POPCORN"

With the concept of "Emotion in your spare time," this platform offers "dense entertainment" by emerging creators who will lead the next generation. Each episode is about 1.5 to 3 minutes long, with the first few episodes available for free viewing, followed by pay-per-view releases. Leveraging GOKKO's unique know-how, which has resonated across generations, the platform offers works where creators' individuality shines across genres such as romance, immoral dramas, youth, and comedy.

Download the app here

https://popcorn-drama.go.link?adj_t=1sfy5zhz

- Specifications: iOS version, Android version

- Price: Free download *In-app purchases available

- Planned operating environment: iOS 17 or later, Android 12 or later

Download the app and watch

◾️ About GOKKO Inc.

GOKKO Logo

Until now, and from now on. Unstoppable growth and ambition for the world.

A creative company where next-generation entertainment leaders gather.

"Gokko Club," a group of creators who continue to produce vertical short dramas with the theme of "small love often forgotten in daily life." Formed by 6 members in May 2021, GOKKO Inc. was established in 2022. Adopting a world-class production system that handles everything from planning, scriptwriting, shooting, editing, posting, and marketing as one integrated team, they have produced and posted over 4,000 videos. The cumulative views reached 13 billion (as of May 2026) & total social media followers exceeded 7.6 million*. They are a creator group that continues to present the world with "the future of drama expression" by boasting the No. 1 position in Japan for views, follower counts, and likes within the short drama category.

*Includes joint accounts

Company Overview

GOKKO Studio

Location: Tokyo

Representative: Co-CEOs Satoshi Tanaka, Tomo Tada

♧ Corporate Site: https://gokkoclub.jp/

♧ TikTok: https://www.tiktok.com/@gokko5club/

♧ Instagram: https://instagram.com/gokko5club/

♧ YouTube: https://www.youtube.com/@gokko5club/

♧ X: https://x.com/gokko5club/

♧ Recruitment Site: https://gokkoclub.jp/recruit/

♧ Vertical Short Drama App "POPCORN": https://popcorn-drama.go.link?adj_t=1sfy5zhz