“I look forward to seeing you again in 20¹⁾ years.”
– Takahiro Karasawa²⁾

HaseKara (ハセカラ)³⁾ was a series of events on 2channel's /livejupiter/ board, involving a teenage tripcode user and his lawyer, that began on March 7, 2012. It is often conflated with Koushinism (恒心教, Kōshinkyō), which is a joke movement that parodies religious cults.

Ryōta Hasegawa (長谷川亮太, Hasegawa Ryōta), nicknamed Chinfe (チンフェ),⁴⁾ was a former /livejupiter/ tripcode user, then named Taichi Yagami (八神太一), who discovered 2channel through a Yu-Gi-Oh! board⁵⁾ and started posting on October 13, 2009.⁶⁾ He was an otherwise unremarkable teenage nuisance until he shared his academic acceptance letter on March 7, 2012,⁷⁾ which allowed users to dox him.⁸⁾

At first, he tried to play this off,^9)10)11) but he ultimately decided to drop the tripcode to mitigate the damage.¹²⁾ However, the damage was done and fellow peers at Kokushikan University overheard his intent to hire a lawyer with his ¥300,000.¹³⁾ Since then, Hasegawa has fallen off the radar. To honor him, people still prank his parent's house, the so-called 'Chiba Kenma' (ちばけんま) in Matsudo.¹⁴⁾

Takahiro Karasawa (唐澤貴洋, Kawasawa Takahiro), nicknamed Sonshi (尊師),¹⁵⁾ is a lawyer who brought Hasegawa's case to Tokyo District Court. When he took the case, Karasawa filed a number of deletion requests to collect IPs,¹⁶⁾¹⁷⁾ an act called 'pakaben' (パカ弁),¹⁸⁾ then he quickly became a joke due to a clear lack of internet experience¹⁹⁾²⁰⁾ and the very strange decision to go after slander of *himself*.²¹⁾

As a result, the focus shifted towards his law firm which has since renamed itself three times now,²²⁾ usually referencing 'fixed heart' (恒心) or 'steadiness',²³⁾ and moved out of Gotanda to Minato. Since then, Karasawa has defended Jim Watkins' claim to 2channel,²⁴⁾²⁵⁾ received an NHK puff piece documentary called Gyakuten Jinsei, and recognized his infamy.²⁶⁾

Yuta Suzuki (鈴木悠太, Suzuki Yūta), or Yuyu-uta (ゆゆうた), is a content creator and musician who was mostly known for crude songs. In the past, he covered Rei no Are content, remixing the defecating lawyer's theme and added lyrics in 2017,²⁷⁾ but performing the song with the Kanto Sound Project for a live audience on January 10, 2020²⁸⁾ would upset the Koushinists, fearing that it might detract from their main goals.

In turn, the Koushinists doxed him around May 14, 2020 and demanded the deletion of every video using the aforementioned song, borrowing his name for bogus deliveries and false bomb threats. He did comply,²⁹⁾³⁰⁾ though there were a few oversights that extended the harassment campaign to November 22, 2020.³¹⁾³²⁾ As of April 1, 2021, the conflict had concluded and no further action is necessary.

Koushinism (恒心教, Kōshinkyō) is a joke religion and movement that stemmed from an Unsolved Cases special on Aum Shinrikyō in May 2012, which inspired 2channel users to use 'sonshi' (尊師), the highest rank, as a codeword for Karasawa since he was actively litigious. Over time, the users played with the concept of pretending their activities were a religious cult, which gained serious momentum by July 2012.

Their main 'objective' is to be a nuisance and slander his reputation, which can range from raising awareness of his various misdeeds to sending countless false crime notices in his name.³³⁾ Aside from that, they generally borrow religious terminology for fun, saying that they're going on a 'pilgrimage' to see the 'holy lands' (i.e. any public locations connected to Hasegawa or Karasawa).

• 40298 - A question Karasawa answered on Bengo4.com.³⁴⁾ A ZIP code for Louisville, Kentucky.
• 43044 - Karasawa's attorney number. The ZIP code for Mechanicsburg, Ohio.
• Flaming request (炎上依頼, enjoi irai) - In other words, a 'personal army request'.
• Foreskin people (包皮民, Hōhi-min) - A derogatory term for anti-HaseKara forces. It originally referred to Hasegawa defenders, referencing his phallic nickname.
• Generic Man (一般男性, Ippan Dansei) - An MMD model with an uncanny resemblance to Karasawa, associated with a kopipe about him 'defecating' (脱糞, dappun) in inconvenient scenarios.³⁵⁾
• Incompetence (無能, munō) - An attribute or trait, commonly applied to Hasegawa or Karasawa, though many targets or victims have since been bestowed the label for one reason or another.
  • Competence (有能, yūnō) - The antonym of incompetence.
  • Self-talking (自分語り, jibun katari) - The act of talking about yourself. Underage kids are prone to oversharing, despite lacking real world experience, which can increase the doxing risk.
• “Kill Takahiro Karasawa” (唐澤貴洋殺す, Karasawa Takahiro Korosu) - The empty death threat³⁶⁾ that used to be a 'game of chicken'. This is sometimes shortened to 'karakoro' (カラコロ).
  • “What color is the sky?” (空は何色か) - Karasawa's cheeky poem to users who make said threats, saying they would see them again in 20 years,³⁷⁾ the approximate sentence length.
• “-nari” (～ナリ) - A sentence-ending particle used to imitate Karasawa, which stems from text artwork claiming that he was a fan of Momoiro Clover Z from May 7, 2012.
• Nuclear weapons (核兵器, kakuheiki) - A joke about Karasawa owning nuclear weapons, stems from a user with a Pakistan proxy having their hostname exposed for posting Hasegawa's name.
• Pazupi (パズピー) - A clipping of 'puzzle piece', referring to clues or PII that could lead to doxing.
• Potato (芋, imo) - A type of person, stems from a misreading of 'bad friends' (悪いもの達).
  • Bad potato (悪芋, waru imo) - A criminal or extremist who may utilize death threats, hacking, etc.
  • Good potato (良芋, ryo imo) - The antonym of 'bad potato'. A smiling man in an orange shirt.
  • Stinky potato (臭芋, kusa imo) - An incompetent follower who hinders the movement by setting bad examples (e.g. being arrogant, being 'too sociable', false-flagging, self-promoting, etc.).
  • Sweet potato (甘芋, umai imo) - A schizophrenic, stems from the derogatory term 'toushitsu' (糖質).
• Route (路線, Rosen) - A faction for certain activities. It may be mistranslated as 'line'.³⁸⁾
• Thesis (論文, ronbun) - An advance notice of a crime, usually a bomb threat.
• Tōshoku (当職) - The uncommon first-person pronoun for lawyers, borrowed because it was funny.

• Hasegawa's final tripcode was ◆YAGAMI99iU (#_ｲ~7G6LL). A list was compiled on this page.
• Their sideways ( (c ：; ]ミ kaomoji is called the 'Yoko Sonshi' (横尊師, lit. “Horizontal Guru”).
• In 2011, Karasawa was likely trolled into buying the 2ch Viewer,³⁹⁾ prior to him taking Hasegawa's case.
• Due to Japan's relationship with its East Asian neighbors, it may be worth noting that:
  • In Chinese, Karasawa is 'Tángzé Guìyáng' (唐澤貴洋)⁴⁰⁾ and Koushinism is 'Héngxīnjiāo' (恒心教).
  • In Korean, Karasawa is still Karasawa, while Koushinism is 'Hangsimgyo' (항심교).

• Rei no Are

• Takahiro Karasawa Wiki (Mobile) - The main Japanese wiki, forcibly split from the NanJ Wiki.
  • Koushin Chronology - Timeline. Key: Hasegawa, Karasawa + Law Firm, and Yuyu-uta.
• Russia Bulletin Board (Article) - Latest iteration of the 'Karake' (カラケー) bulletin board.
• Japanalysis's Karasawa Video - A detailed English-language YouTube video that goes more in-depth about the history and shenanigans. Probably a more consumable format.