tgt_debeyohiru

The person under investigation is a software engineer, and from 2026 onward has been active under the ID `debeyohiru` .
They appear to have started using this ID in January 2026. Can you identify the ID they used before that?

As of January 2026, an account with their old ID still exists on the service [note](https://note.com/).
Please answer that account ID.

For example, if the account was `digital_jpn_gc`, the flag would be `SWIMMER{digital_jpn_gc}`.

We have the name “debeyohiru” and a link to a social platform called note.com.
When we search for this username on note.com, we find nothing.
A Google search using this username leads to a BlueSky account.

We can see several posts, including an image from an account on note.com with the name “furaigo5” in the path.

Flag: SWIMMER{furaigo5}

As of January 2026, `debeyohiru` appears to have been job hunting and had a profile page published online.
Find this page and answer its URL.

For example, if the relevant page were `https://example.com/foobar`, the flag would be `SWIMMER{https://example.com/foobar}`.

We know that debeyohiru is a software engineer, so he potentially has a GitHub account.
When we search for “Debeyohiru GitHub” in Google, we find nothing.
However, we know his old ID is “Furaigo5,” so we find a GitHub account with that name.

We can see that there is a link to a GitHub profile:

https://furaigo5.github.io/profile/

En explorant ce profil github nous trouvons son adresse mail :

furaigo5.onionsoup@gmail.comx

Flag: `SWIMMER{https://furaigo5.github.io/profile}`

We want to know the email address that `debeyohiru` currently uses in 2026.
Investigate and answer the email address they are likely using now.

For example, if the address were `foobar@example.com`, the flag would be `SWIMMER{foobar@example.com}`.
Warning: Do not send any emails to this address. You do not need to send any mail to answer.

Flag: `SWIMMER{furaigo5.onionsoup@gmail.com}`

We want to know `debeyohiru`'s real name.
Answer the name you believe is their legal name.

For example, if their real name were `Sanae Takaichi`, the flag would be `SWIMMER{Sanae Takaichi}`.
Please answer in Latin alphabet; you do not need to consider Kanji or Hiragana.

By inspecting the profile, we find his username but not his first name/last name.
By inspecting the source code, more specifically the js/script.js file, we can find a first name in the comments.

Flag: SWIMMER{Gotanno Tsubasa}

We want to know the smartphone models debeyohiru is believed to have used as of December 2025.
If you believe they used multiple devices, answer all of them connected with underscores (_). In this case, the order does not matter.
You do not need to include the manufacturer name.

For example, if they used Xperia 10 VII and iPhone 17, the flag would be SWIMMER{Xperia 10 VII_iPhone 17}.

On the page, we find a summary of his equipment; we can see two smartphones.

The answer is incorrect.
The page is dated January 2026, but the question asks for December 2025.
We need to use Wayback Machine, but we can't find anything.
Using Archive.today, we can see the 2025 version of the website.

From there we google search the restaurant in Tokyo and found two. Analyzing the Google maps reviews we came across one from "ふらいご" (furaigo), his other nickname

https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25KWFZIRnpSRTlOV0V4b05ISkJSMmhSTlVvMU4xRRAB!2m1!1s0x0:0x4ca30112c5ae88ac!3m1!1s2@1:CAIQACodChtycF9oOnJXVHFzRE9NWExoNHJBR2hRNUo1N1E%7C0dN_Y0iv9hZ%7C?hl=fr&source=sh/x/kp/local/m1/0&kgs=c74f87603bbd159f&shem=shrtsdl&utm_source=shrtsdl,sh/x/kp/local/m1/0

The date of the post and the post itself confirm that the meal we're looking for should be found on this Pomme's restaurant menu.
Looking through their Instagram, we find the winter menu.
Comparing Debeyohiru's post picture and the found winter menu's items we identify the first item as being the one he ate that evening.

https://www.instagram.com/p/DTPsh-1Eh3V/

Flag: SWIMMER{豚肉とリンゴのホタテトマトクリームオムライス}

debeyohiru has a favorite dish and seems to eat it frequently. Most recently, it was confirmed that they ate this dish for dinner on January 10, 2026.

Identify the menu item they ate for dinner on this day and answer with the name exactly as listed on the restaurant's menu.

For example, if it is determined that they ate a Big Mac at McDonald's, the Flag would be SWIMMER{ビッグマック}. Please ensure the menu item name follows the Japanese notation used on the restaurant's menu.

Back to his bluesky account, there's a post about Pomme's omurice

https://bsky.app/profile/debeyohiru.bsky.social/post/3mazue5yqdc2n

Flag: SWIMMER{Pixel 8 Pro_iPhone 13 mini}`