Transit Girls

Sayuri Hayama is third grade high school student whose mother died two years ago and lives with her father Keigo. One day, Keigo is remarried to Madoka, which became Sayuri's mother-in-law and her daughter, Yui, as her sister-in-law. She does not accept the sudden event when Yui made a kiss to her.

Sayuri is deprived from Yui's lips. She was confused during their unexpected first kiss, while not hearing about the spirit of the kiss from Yui will not create irritation.

Sayuri thinks straight to Yui. The next day, she became sick, and Yui takes care of her which will change their relationship.