Katsu falls in love at a crucial time before the exam. The person in her heart is her best friend's mother, Yuu. She never thought she would fall in love with her best friend's mother. Koiji finds himself walking a thorny path no matter how he falls, and Katsu worries. She wants to be able to see her face at least, so she goes to her best friend's house every day... One day, she finds Yuu unconscious in her bathroom. She rushes to help Yu wake up, but her dreamy Yu misunderstands her as her husband...
