Mystery enthusiasts and rom-com fans have a brand-new series to add to their watchlists. The highly anticipated manga Pen and Handcuffs and De Facto Marriage (Pen to Tejou to Jijitsukon) is officially receiving a TV anime adaptation. A newly released teaser trailer has given audiences their first look at this fresh take on the mystery genre, which blends high-stakes criminal investigations with unconventional romance.
Originally written by Shinichi Sawaragi with illustrations by Gasuyama Tank, the series has garnered a dedicated following for its unique fusion of lighthearted comedy and clever deduction. If you enjoy romantic comedy anime that break the mold, this upcoming adaptation promises to deliver an unforgettable dynamic between its two lead characters.
The Plot: A Detective, a Mute High Schooler, and Terrible Drawings
The story follows Eiji Kirisame, a dedicated and hardened detective whose life revolves entirely around solving difficult cases. During a tense investigation at a crime scene, Eiji crosses paths with Tsugumi Kuchinashi, a mysterious high school girl who does not speak. However, her inability to vocalize her thoughts does not stop her from solving the most complex murders.

Using a simple sketchbook, Tsugumi reveals the truth behind elaborate crimes through incredibly poor, yet strangely accurate, drawings. Her bizarre deduction methods consistently corner the culprits, making her an invaluable—if unorthodox—partner to the police force. Fans of mystery-solving anime will appreciate the intricate yet humorous ways Tsugumi unravels each case.
An Unexpected Marriage Proposal
While Tsugumi possesses a brilliant mind, her involvement in dangerous criminal cases inevitably puts a target on her back. When a vengeful culprit attempts to attack her, Eiji steps in and saves her life in the nick of time, successfully arresting the criminal. Relieved that the ordeal is over, Eiji is immediately thrown a curveball when Tsugumi suddenly proposes marriage to him on the spot.
This sudden confession sets the stage for a chaotic and endearing relationship. As the two continue to work together, they must navigate the complexities of their newly formed partnership, both in the interrogation room and in their personal lives. For more updates on this adaptation and other upcoming releases, keep an eye on our latest anime news coverage.
Frequently Asked Questions
What is Pen and Handcuffs and De Facto Marriage about?
The anime follows Eiji, a serious detective, and Tsugumi, a mute high school girl who solves complex murder cases using terrible drawings. After Eiji saves her from a dangerous criminal, she unexpectedly proposes to him.
Is there an official release date for the anime?
An official release date has yet to be announced. The production committee has released a teaser trailer, and further details regarding the broadcast schedule, voice cast, and animation studio are expected to follow soon.
Who are the creators of the original manga?
The original story is written by Shinichi Sawaragi, featuring artwork by Gasuyama Tank. It is serialized under Hakusensha.
Source: Otasuke