Fusa lives alone at her home. She had a younger sister who passed away from illness. Fusa is a hard-working girl and enjoys doing housework. She was class representative until junior high.
Fusa was first seen on the way to Seri's home to deliver some handouts as ordered by her teacher. Seri's maid greeted her and invited her in. Fusa waited for Seri until she fell asleep. Seri then woke her up by kissing her. She pointed out that Fusa woke up past midnight and offered to have her stay the night.
Fusa woke up at 7 and left for school. Seri invited her to visit after school. She was happy to see Fusa again and confessed her feelings for her. Fusa didn't accept it and requested for a bath. Fusa cleaned the bath while Seri played around. Fusa called Seri by her name for the first time and Seri was happy. Fusa stayed for the night.
The next morning, Seri hugged Fusa before she left for school. Fusa couldn't concentrate in class and was preoccupied by her attachment to Seri. After school, Fusa started noticing other girls. She caught herself doing so, then panicked and ran home. At home, Fusa became depressed by her loneliness and went to Seri's home.
Seri was happy to see Fusa again and assured her that she can find a home with her. Fusa felt relieved to be with Seri again but apologized, accusing herself of using Seri to cure her loneliness. Seri explained that Fusa was special to her and that she had recognized that Fusa was lonely.
Fusa spent the night and woke up late. She decided to skip school and Seri went to buy cakes for breakfast. Seri then unveiled a maid outfit that she had ordered by mail order. She had Fusa put it on then took photos of her. Seri complimented Fusa's skill in preparing tea and requested her to cosplay.
Seri shoved her finger in a cake requested Fusa to lick it off. Fusa found herself helpless in the face of Seri's fearsome assertive authoritative tone. Fusa found herself enjoying it but she caught herself and became embarrassed. Seri was surprised by Fusa's bold behavior and cornered her, confessing her feelings. Seri then caressed Fusa's thigh and Fusa enjoyed it with a tinge of guilt. They then spent the night.
Seri woke up after Fusa. Seri confessed her loneliness and that she wanted Fusa to be with her. Fusa returned her feelings and Seri begged for her companionship. They took a short nap then Seri woke Fusa up. Seri revealed that she will start attending school and invited Fusa to school.