Tsuzuri Imamiya

Tsuzuri Imamiya (今宮 綴 (いまみや つづり?), Imamiya Tsuzuri ) is the wife of Yuugo Tennouji and the mother of Nae Tennouji. In the Alpha Attractor Field Divergence 0.523307%, she was studying as a university student under Suzu Hashida when she met Tennouji December 22, 1996. Though Tennouji tells others that she died in childbirth, she was a actually turned into a jellyman by SERN as punishment and to threaten him around October 22, 2001. At the time she was pregnant with their second child.

Her story is told in the manga Onshuu no Braunian Motion.

Appearance
Tsuzuri strongly resembles Nae Tennouji as noted by Suzuha Amane by her physical appearances as she crosses paths with Tennouji.

When she first met him, her hair was colored Coyote brown, extended long and down to her hips. After she and Tennouji married and gave birth to Nae, she fixed her hair into a ponytail hanging down mostly above her right shoulder.

Personality
Tsuzuri is introduced as a kind, mature, grateful and enthusiastic woman when she thanks Yuugo Tennouji for stopping a thief to retrieve her handbag back and getting to know him as a slightly rough but kind man whose slightly rocky relationship with Suzu Hashida improved thanks to her involvement as the mediator. She is also somewhat clumsy, tending to trip or bump into things by accident.

Even after discovering Tennouji was employed by the Rounders, a wrong kind of people to work for, and the fact that he was asked to eliminate Suzu, she held no ill will towards him and was selfless enough to volunteer to be a Jellyman experiment by SERN against her will as punishment for him to make sure that his and Nae's safety is guaranteed and was not afraid of dying.

Background
While Tsuzuri was not her student, she was already acquainted with Suzu Hashida in the past and knew her to be a Physics professor at the local university.

Braunian Motion of Love and Hate
Tsuzuri first met Yuugo when he stopped a purse snatcher who stole her bag, only to be mistaken for the purse snatcher and knocked out by Suzu Hashida. After he woke up, they introduced themselves.

Over time, she and Yuugo grew closer and eventually married, with her giving birth to Nae.

When SERN busts in in order to come after Suzu's laptop and punish Yuugo for his insubordination, Tsuzuri offers herself so Nae would not be harmed. However, still under the impression that they would return her soon, Tsuzuri leaves after revealing that she is pregnant. She was then jellified by SERN, with her corpse being shown to Yuugo. The SERN agent then told Yuugo to make up a story surrounding her death.

Steins;Gate
Tsuzuri is dead by the start of the series. Not knowing this, Okabe wonders if Tennouji's wife might be FB. When Yuugo himself reveal that he is FB, Okabe asks about his wife and Yuugo lies about the circumstances of her death, stating that she died giving birth to Nae.

Etymology

 * The name Tsuzuri means "compose, spell/spelling, write, bind (books)" (綴).
 * Tsuzuri's surname Imamiya means "now" (今) (ima) and "temple, shrine, palace" (宮) (miya).
 * Her married name Tennouji means "heaven/heavenly, sky, imperial" (天) (ten), "king, prince, monarch, sovereign, potentate" (王) (nou) and "temple" (寺) (ji).