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Solved case · 2018

Stabbing of Phoenix Luna by Yuka Takaoka

Also known as Yuka Takaoka attempted murder case · Shinjuku kitchen knife stabbing (2019)

SOLVEDCONVICTED
Updated
Updated Jul 18, 2026
Shinjuku, Tokyo, JapanView on the map

The short answer

Stabbing of Phoenix Luna by Yuka Takaoka in brief

In May 2019, Yuka Takaoka stabbed her boyfriend, Phoenix Luna, with a kitchen knife in their Shinjuku, Tokyo apartment after viewing photos on his phone; she was convicted of attempted murder in December 2019 and sentenced to 3½ years in prison.

Start hereThe Real Life Yandere Girl | The Strange Case of Yuka Takaoka

Key facts

Year
2018
Place
Shinjuku, Tokyo, Japan
Status
SOLVEDSolved
Victim
Phoenix Luna
Outcome
Convicted: Yuka Takaoka

The coverage index

Where to watch & listen

1 piece from 1 creator: ranked, with duplicates removed and short clips set aside.

Start here

The Real Life Yandere Girl | The Strange Case of Yuka Takaoka

Video · YouTube · 11 min · 2021

Coffeehouse Crime's 11-minute overview: the quickest complete way into the case.

Watch on YouTube

Titles and descriptions are the creators’ own and may not reflect current legal status. The sourced facts are in the file below. Players load only when you press play. Suggest coverage we’re missing.

The case file

What happened

Overview

Yuka Takaoka, a Japanese woman born in 1998, was convicted of the attempted murder of her boyfriend, Phoenix Luna, following a stabbing at their apartment in Shinjuku, Tokyo, in May 2019. The case drew significant online attention due to Takaoka's appearance and the circumstances of the attack, which media outlets compared to the anime archetype of a "yandere" — a character who becomes violently obsessive toward a romantic partner.

Background

According to Wikipedia's account of the case, Takaoka had worked in the hostess club industry in Shinjuku Ward, Tokyo, after leaving university, and held a management position at a club at the time of the offense. She began a relationship with Luna, a nightclub worker in the Kabukicho district, in October 2018. Reports initially indicated the couple moved into a shared apartment on May 20, 2019, though Luna later disputed this detail.

The Stabbing

On May 23, 2019, Takaoka looked through Luna's phone while he was in the bathroom and found photos she interpreted as evidence of infidelity. That night, after waiting until Luna was asleep, she stabbed him in the abdomen with a kitchen knife at approximately 3:50 a.m. Luna pushed her away and attempted to flee toward an elevator before losing consciousness. Takaoka brought the bloodied, unconscious Luna to the building's lobby, where she was later found sitting near him, smoking a cigarette and reportedly stating she had not called emergency services because she intended to die after he did. She was arrested and charged with attempted murder. Luna was hospitalized in critical condition, remained in a coma for five days, and ultimately survived with a full recovery.

Legal Proceedings

Takaoka's trial took place in December 2019. She was found guilty of attempted murder on December 3, 2019. Prosecutors had sought a five-year prison sentence; on December 5, 2019, she was sentenced to 3½ years, with the presiding judge describing her actions as "selfish" and reflecting a "strong intent to kill." Luna stated publicly that he did not hold a grudge against her. Prior to the trial, Luna had settled a civil claim against Takaoka out of court for ¥5,000,000 (approximately US$39,271).

Aftermath

Following the attack, images of Takaoka circulated widely online, and she gained a following that included fan-made art and social media commentary focused on her appearance, which commentators characterized as an example of public fascination with attractive criminal defendants. Takaoka was released from prison at an unspecified date in 2023 and has since been reported to livestream video games and post cosplay-related photos online.

6 dated entries · 2018–2023

Timeline

  1. Yuka Takaoka begins a relationship with Phoenix Luna, a nightclub worker in Kabukicho, Tokyo.

  2. Reported date the couple moved into a shared apartment in Shinjuku, Tokyo (disputed by Luna).

  3. Takaoka stabs Luna with a kitchen knife in their apartment after viewing photos on his phone; Luna is hospitalized in critical condition and later falls into a coma.

  4. Takaoka is found guilty of attempted murder.

  5. Takaoka is sentenced to 3 1/2 years in prison.

  6. Takaoka is released from prison at an unspecified date.

2 named in this file

People

Victims first. Every legal label is set from public records and court outcomes, not from the prose.

  • Phoenix Luna

    VICTIM

    Stabbed in the abdomen by Takaoka on May 23, 2019; hospitalized in critical condition and in a coma for five days before making a full recovery.[3]

  • Yuka Takaoka

    CONVICTED

    Convicted of attempted murder on December 3, 2019, and sentenced to 3 1/2 years in prison on December 5, 2019.[3]

From the record

Quick answers

Who was convicted?
Yuka Takaoka: Convicted of attempted murder on December 3, 2019, and sentenced to 3 1/2 years in prison on December 5, 2019.

3 cited

Sources

Coverage is not a source: every fact in this file rests on the records below.

  • 2 Press
  • 1 Encyclopedic
  1. Yuka Takaoka

    EncyclopedicWikipediaAccessed Jul 18, 2026

Trust

Record history

First published
Jul 18, 2026
Corrections
None

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