Taishou Itsuwari Bridal: Migawari Hanayome to Gunpuku no Mouai
English title: Taisho Era Contract Marriage: The Substitute Bride and a Soldier's Fierce Love
Japanese title: 大正偽りブラヰダル 身代わり花嫁と軍服の猛愛
Type: ONA
Episodes: 8
Source: Manga
Genres: Hentai
Studios: Studio Hokiboshi
Producers: Studio Mausu, Suiseisha
Duration: 6 min per ep
Rating: Rx - Hentai

Asako, despite her status as a viscount's daughter, is shunned in high society. One day, a marriage proposal arrives for her younger sister with Captain Kido, a renowned soldier known for his ice-cold demeanor. Rumor says he seeks a bride solely for the purpose of bearing children... To protect her precious younger sister, Asako volunteers as a substitute bride.

(Source: TVDB)