In a video where Hikaru visited his hometown friend Kyohei’s home, bombshell information was unexpectedly revealed. Affair allegations have emerged regarding Hikaru’s biological father, Katsuya. Moreover, the other party is reportedly an 80-year-old woman.
Shocking Facts Uncovered From a Letter
It all started with a letter that arrived at Kyohei’s workplace from a certain woman.
Letter contents (summary):
- “I watched Hikaru’s video”
- “I’m the one who approached you before”
- “Katsuya is having trouble with his girlfriend”
- “I am not his girlfriend, so I’d appreciate if you could contact me”
- Phone number and name were included
Kyohei, who received this letter, was confused. It revealed that Katsuya had a girlfriend.
Katsuya Had a Girlfriend
When Kyohei confirmed by phone, the woman who sent the letter insisted “I am not his girlfriend.” In other words, Katsuya has a different official girlfriend.
And that girlfriend’s age is apparently around 80 years old.
“Wait, 80 years old. Are you serious?”
Both Hikaru and Kyohei couldn’t hide their surprise at this age.
Cross-Referencing Kyohei’s Information with Hikaru’s Information
The information Kyohei had wasn’t limited to this.
1. Slot Machine Sound Ringtone
According to Hikaru’s testimony, there were frequent incoming calls to Katsuya’s phone. The ringtone apparently sounded like a slot machine jackpot.
“That’s not the default setting. He might have changed the ringtone for his girlfriend’s calls.”
2. Bathing Together
Kyohei’s testimony. Even more shockingly, there’s testimony that he bathes together with the 80-year-old woman and has her wash his hair.
“Bath together and have her wash your hair.”
3. Daily Phone Calls
Katsuya’s girlfriend calls him every day and has a jealous personality.
It was also revealed that she became jealous when Katsuya appeared in Hikaru’s video and has been interrogating him about it.
Where the Money Went Revealed
Previously, Katsuya told Kyohei, “I spent about 7 million yen on repair stands, so I have no money.”
However, he should have a monthly income of about 300,000 yen plus pension. So why is he so short on money?
“He was spending it on women.”
According to Kyohei and Hikaru’s speculation, there’s a high possibility Katsuya was spending money on women.
Katsuya Watches All of Hikaru’s Videos
Even more surprisingly, Katsuya and his girlfriend apparently watch all of Hikaru’s YouTube videos.
They even watched the 4-hour video featuring Kyohei.
“That means she’s watching her boyfriend’s son.”
In a sense, the girlfriend may be watching over Hikaru from a position like a “stepmother.”
Who is the Letter Woman?
So who exactly is the woman who sent the letter initially?
According to Kyohei, this woman is like a fan of Katsuya. She has no romantic feelings at all and apparently approached him simply because she “thought he was interesting and wanted to interact with him.”
“This person just thinks Katsuya is interesting and wants to be involved.”
In other words, Katsuya is:
- 80-year-old girlfriend (official romantic partner) – affair relationship?
- 48-year-old woman (fan-like existence)
He’s involved with these two women.
Shocking LINE Messages
Kyohei also confirmed screenshots of LINE messages between Katsuya and the letter woman.
The contents included:
- “Want to hug you”
- “Want to go to lunch soon”
Furthermore, the LINE screen Kyohei tried to show had so much text it was almost unreadable. There seems to have been a considerable amount of exchange.
Even Hikaru is Exasperated
Hearing this series of stories, Hikaru appeared completely exasperated.
Hikaru: “What does he even want?”
Kyohei: “I want to tell the viewers too. Don’t think normal blood runs through him.”
However, at the same time, he seemed to feel a kind of respect for Katsuya’s outrageous behavior.
“He really is a monster, huh.”
“He’s a genius, that guy.”
Sequel Confirmed
Following this shocking development, a sequel to the Katsuya affair episode has been confirmed.
Hikaru suggested the possibility of actually contacting the letter woman and Katsuya’s girlfriend. Further truth-seeking is anticipated.
“I’m going to pursue this. How far will I go? I’ll pursue it normally.”
Will the Comments Section Be All About Katsuya?
Originally, this video was supposed to be touching content about Hikaru giving GACKT concert tickets as a gift.
However, because Katsuya’s affair allegations were so shocking, the comments section will likely be flooded with talk about Katsuya.
Summary
Affair allegations have emerged regarding Hikaru’s father, Katsuya. The other party is an 80-year-old woman, and shockingly, he’s also involved with another 48-year-old woman.
Facts revealed:
- Katsuya has a girlfriend around 80 years old
- He’s also approaching another 48-year-old woman
- He has an intimate relationship with his girlfriend, including bathing together
- Katsuya’s girlfriend is jealous and calls him every day
- She checks all of Hikaru’s videos
- He was likely spending money on women
With this development, both Hikaru and Kyohei can only describe him as a “monster” and “genius.” In 2026, Katsuya seems set to be at the center of the storm.
In the sequel, more truth is expected to be revealed. What will Katsuya say, and who exactly is this 80-year-old girlfriend?
Attention is focused on the next developments.

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