Three Men Go Missing on Lake Biwa — Only Their Rented Jet Ski Found on the Water

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The story

At around 11:30 a.m. on September 21, 2026, a rental shop on Lake Biwa in Otsu, Shiga Prefecture, called police to report that three men who had rented a jet ski (personal watercraft) had not returned. Only the jet ski itself was later found on the lake, and police and fire crews continue to search for the men. On the thread, posters debated whether the rental shop had actually checked the men’s boating licenses and ID, whether they had been wearing life jackets, and whether rough water from an approaching typhoon may have been a factor. At the same time, a fair number of crude comments mocking the region or the victims cropped up, making for a mix of fact-checking and mean-spirited joking.

Delivered 9/21 (Mon) 15:34 JST

Kansai TV

According to police, at around 11:30 a.m. today (the 21st), a shop in Otsu that had rented out a jet ski to three men filed a report with police after the men failed to return from Lake Biwa.

Source: news.yahoo.co.jp / original article here

What people said

2AnonymousSep 21, 2026 17:41
Mash, Ortega, and Gaia
30AnonymousSep 21, 2026 17:47
Re: #3
Re: #2
According to the report: 'They rented the jet ski from the shop and were wearing life jackets at the time.'
Bet they took them right off after, lol
47(*)Sep 21, 2026 17:51
Re: #2
Macho, Osteoga, and Gay-a

The Black Tri-Coupling

Note: “Mash, Ortega, and Gaia” is a joke referencing the “Black Tri-Stars,” a legendary three-man ace pilot squad from the Gundam anime franchise — the poster is comparing the three missing men to the famous trio. The reply in #47 mangles the names into crude puns and swaps “Tri-Stars” (三連星) for “Tri-Coupling” (三連結, like coupled train cars) as a joke.

3AnonymousSep 21, 2026 17:41
Did a mermaid take them?
4AnonymousSep 21, 2026 17:41
Too much hassle to return it, so they just went home
51AnonymousSep 21, 2026 17:52
Re: #4
If they didn't even check ID, that'd explain it
135AnonymousSep 21, 2026 18:12
Re: #4
I could totally see that
140AnonymousSep 21, 2026 18:13
Re: #4
Yeah, probably
Searching for them is a waste of time
7AnonymousSep 21, 2026 17:42
Jet skis are something you ride near the shore, aren't they?
Did they think it was the same as a boat?
16AnonymousSep 21, 2026 17:44
Did they skip out without paying?
Hard to imagine all three drowning at once, right?
18AnonymousSep 21, 2026 17:44
Going out with a typhoon on the way — unbelievable
78AnonymousSep 21, 2026 17:59
Re: #18
Seriously, who goes out today of all days
Even if it's a lake, the wind would kick up some serious chop

And no life jackets either, so of course this happens
Can't be helped
33AnonymousSep 21, 2026 17:48
They'd have had a copy of their boating license taken at rental, so I doubt they just abandoned it and ran
80AnonymousSep 21, 2026 18:00
Re: #33
Class 4 boating license, huh
Probably paid upfront anyway
63AnonymousSep 21, 2026 17:55
Can a jet ski even hold three people?
159AnonymousSep 21, 2026 18:21
Re: #1
Lake Biwa is basically the ocean, man
165AnonymousSep 21, 2026 18:24
Re: #159
Never seen a whale in it though
161AnonymousSep 21, 2026 18:22
Idiots should never ride jet skis. How many fatal accidents have there been by now?!
So many idiots think just turning the handlebars makes it turn!
Jet skis should require a license.
174AnonymousSep 21, 2026 18:26
Re: #161
It already does. There are just a lot of idiots who ride without one.
163AnonymousSep 21, 2026 18:24
News just said 2 are in cardiac arrest and 1 is still missing
164AnonymousSep 21, 2026 18:24
Re: #163
Cardiac arrest, huh
Probably all gone at this point
169AnonymousSep 21, 2026 18:25
Re: #163
Whoa, that was fast

Note: this claim of cardiac arrest circulated as unverified live-broadcast chatter within the thread and was not confirmed in the source article at time of writing.

173AnonymousSep 21, 2026 18:26
Got taken down by a nutria
182AnonymousSep 21, 2026 18:29
Re: #173
Not Lake Biwa, but a few months back during a heavy rain I ran into one for the first time on a riverbank near me

Note: nutria are large invasive semi-aquatic rodents found in parts of Japan — the comment is a tongue-in-cheek joke, not a serious theory.

226AnonymousSep 21, 2026 18:42
The bottom of Lake Biwa connects straight through to Lake Titicaca in South America, on the other side of the globe
That's probably where they'll turn up
233AnonymousSep 21, 2026 18:44
Re: #226
Even Lake Tazawa, Japan's deepest lake, is only about 400 meters deep

Background and Key Points of Discussion

Unlike road vehicles, personal watercraft (PWC) in Japan require a small-craft operator’s license (specifically a “special small-craft license” for jet skis), and rental shops normally ask to see it before handing over the keys. A 2018 legal revision also made wearing a life jacket mandatory in principle. The thread split along two main lines: skepticism about whether the license and ID checks actually happened (with some suspecting the men simply rode off without returning the craft), and criticism of the poor judgment shown in going out on the water with a typhoon approaching. Some posts claimed two of the men were in cardiac arrest, but this was unverified information based on live news coverage and had not been confirmed as of the source article. A number of crude comments mocking the region or the victims also appeared in the thread; since the people involved in this accident are real individuals, those remarks have been left out of this article.

※ This article is excerpted and summarized from the 5channel (News Speed+) thread “[Shiga] Three Men Missing on Lake Biwa — Only Rented Jet Ski Found on the Water, Police and Fire Crews Searching.”

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