Otose お登勢 is actually the 源氏名 genji na or 'professional name' used by geishas and hostesses, her real name is Terada Ayano 寺田 綾乃. She holds the title of one of the 4 Devas of Kabuki District かぶき町四天王 kabuki chou shitennou and runs Otose's Snack House in the 1st floor below the Yorozuya. She oftens visits the Yorozuya, or sends one of her employees, Tama or Catherine, to collect rent.
She grew up with Doromizu Jirochou 泥水 次郎長, and would always keep him out of trouble and straighten him if he goes the wrong way. As Jirochou became a part of organized crime, everybody became afraid of Jirochou but Otose still continues to be there straightening him out from trouble. Thanks to Otose, Jirochou became a popular vigilante.
Otose at the time was a popular waitress working at a tea shop selling tea and dango because of her kind and friendly personality, a lot of men were drawn to her.
After the fight between Terada Tatsugorou and Jirochou, both men became good friends who only desired to protect the Kabuki District.
All three became friends but both men both fell in love with Otose. However Jirochou only wanted Otose to be happy so he backed off and allowed Terada and Otose to be together. Otose and Oiwa both fell in love with Terada but in the end Otose and Terada got married in the end.
As Terada and Jirochou joined the Joui patriots against the Amanto, Otose became a widow whose husband, Terada Tatsugorou, died in a past war. However, after Tatsugorou died, Jirochou would leave his own family to come back and protect the town, and Otose.
One day, when visiting her husband's grave, Otose would meet a younger Gintoki. In exchange for food she had brought as offerings for her deceased husband, Gintoki vowed that he would never forget this debt, and that he would watch over her. 
Otose became Gintoki landlady and allowed Gintoki to open Yorozuya above her snack shop.
She wears a dark brown/black kimono and has brown hair. Known to be a beauty in the past, the Yorozuya couldn't believe it when they found out her real identity, as she was the first love of a dying old man who wanted to see her again.
She is forgiving and cares for her employees, as seen with Catherine. However, she is very strict and demands rent from the Yorozuya every month. In case they don't pay, she has been known to either employ them to clean her bar or sending Tama, later equipped with a weapon system, to collect it from them. She views Gintoki, Shinpachi, Kagura, Catherine and Tama as family.
- In Episode 43 of the Gintama anime, Otose slithers her tongue as Sarutobi Ayame stated that she is not a woman at all, or maybe Orochimaru was inside of the old hag (because her voice actor is also the voice actor for Orochimaru in Naruto).