[All] Nagano Mei's Two-Legged Affair Controversy: Tanaka Kei and Kim Moo-joon, Timeline Analysis, Local Reactions

The controversy over Nagano Mei's affair has hit Japan and Korea hard. We will comprehensively summarize the circumstances surrounding her secret meeting with Tanaka Kei, her relationship with Kim Moo-joon, the Shukan Bunshun timeline and agency's explanation, and even local reactions.

On April 23, 2025, the suspicion of Nagano Mei's two-timing affair, which shook the Japanese entertainment industry, was revealed through an exclusive report by Shukan Bunshun. The report was even more shocking because it involved married actor Tanaka Kei and Korean actor Kim Moo-joon, who was also starring in the drama. In this article, we will summarize everything from the timeline to the key circumstances of the controversy and the local reactions.

1. Summary of Nagano Mei's affair in Shukan Bunshun

On April 23, 2025, at noon, the Japanese weekly magazine Shukan Bunshun reported on the alleged affair between Nagano Mei (25) and Tanaka Kei (40) . According to the report, the two were caught having a secret meeting in front of Nagano Mei's Tokyo mansion at around 3:00 AM on April 19. Tanaka Kei appeared to be drunk, and was even quoted as saying to Nagano, "I love you so much."

What's surprising is that Tanaka Kei had a key to Nagano Mei's house, and they even enjoyed outside dates, calling her by the nickname "Meiinchui (めいんち) ". The two have a connection, having acted as father and daughter in the 2020 film And the Baton Has Been Passed.

Tanaka Kei explained the report, saying, "It is true that I stayed, but we were not lovers; I just took care of her." However, the prevailing opinion is that it is difficult to view this as a simple incident, given the circumstances that revealed spare keys, nicknames, and even her movements.

2. Suspicion of two-timing with Nagano Mei Kim Mu-jun

The same report also revealed another shocking fact. It was revealed that Nagano Mei had maintained a close personal relationship with Korean actor Kim Moo-joon (born 1998), who is currently starring in the drama Caster. It was also revealed that Nagano invited Kim Moo-joon to her home several times, leading to suspicions of two-timing.

Kim Moo-joon's side immediately denied the dating rumors, saying, "They are just close colleagues." However, Shukan Bunshun continues to report on the circumstances that the two have had close interactions.

3. Nagano Mei's Two-legged Affair Weekly Bunshun Timeline

2020: First encounter with Kei Tanaka in the film And the Baton Was Passed

December 2023: Witnessing a secret meeting between two people

April 15, 2024: Nagano Mei and Kim Mu-jun dating and living together rumors

April 19, 2024: Returned home to Nagano with Kei Tanaka, stayed until dawn

In particular, the fact that she met Tanaka Kei again just a few days after her date with Kim Moo-jun further fuels suspicions that their relationship is more than just friendship.

4. Nagano Mei's agency's statement - Denial and self-awareness notice

Regarding this controversy, Nagano Mei's agency Stardust Promotion released the following statement:

Although they officially denied the relationship, their agency also admitted that "there was room for misunderstanding," and was unable to completely deny the "relationship."

5. Nagano Mei-Tanaka Kei affair Japanese local reaction

Currently, Nagano Mei's Instagram is paralyzed with thousands of comments, and the Japanese community is showing pessimistic reactions such as "neither of them can return."

This issue is not just a simple report of a passionate love affair, but is spreading into an international scandal between a Korean star and a Japanese actor. In particular, the controversy over extramarital affairs and two-timing, which directly damages the actor's image and career, is having a major impact on not only fans but also the agency's crisis response.

Additional reports and official statements from both sides are expected in the future, and this article will continue to be updated to help those who want to comprehensively understand the flow of events.

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