Marriage Battle!

Hatsuka is a regular office worker who suddenly finds herself being pursued by two affectionate women. She lives with Inaba, a capable homemaker who takes care of every detail of her daily life and constantly tries to build a romantic relationship with her. When a young girl named Koruri appears, she claims that Hatsuka once promised to marry her, a statement that Hatsuka denies. This sparks a rivalry between the two women over Hatsuka's heart.