King Amusement Creative has released the first teaser promotional video for the television anime adaptation of Pen to Wappa to Jijitsu Kon (A Pen, Handcuffs, and a Common-Law Marriage), the manga by storywriter Shinichi Sawaragi and artist Tanku Gasuyama. Alongside the video, the company revealed the main cast, production staff, a teaser visual, and confirmed a January 2027 premiere.
Main Cast
- Tomoaki Maeno as Eiji Kirisame
- Inori Minase as Tsugumi Kuchinashi
Staff
- Director: Takaaki Ishiyama (Chaos;HEAd, Fairy Musketeers) at EMT Squared
- Series Scripts: Shigeru Murakoshi (Snowball Earth, Zombie Land Saga)
- Character Design: Miyuki Nakamura (The Unaware Atelier Master)
- Sound Director: Hiroto Morishita (The Faraway Paladin, Wistoria: Wand and Sword)
- Music: Kana Hashiguchi (Classroom of the Elite TV 3, Black Fox)
Story
Forty-year-old detective Eiji Kirisame encounters what may be the strangest witness of his career: a silent high school girl named Tsugumi Kuchinashi who was present at a crime scene. Unable — or unwilling — to speak, Tsugumi communicates only through rough doodles in a sketchpad. Eiji, a veteran at piecing together the truth from scarce evidence, takes every page seriously. But the last page leaves him stunned: it reads, “Will you marry me?!”
About the Manga
Sawaragi and Gasuyama launched the manga in Hakusensha‘s Young Animal magazine in December 2022. The series has reached 400,000 copies in circulation, with the seventh volume released on April 28. Yen Press licensed the English edition in August 2025 and published the first volume in English on March 24.

