Boukansha no Koi

This feeling is neither friendship nor atonement. It is unmistakably love.

Rachel asks Noah to marry her in a fake marriage in order to be near her ailing best friend, Alicia. More importantly, she wanted to stay with Noah, Alicia's brother and Rachel's long-time crush. She knows that Noah secretly has feelings for his sister. Their life together will be full of friendship, lies, and guilt. Their contract marriage will bring moments of dazzling happiness and a heartache that will never go away....... But gradually, Noah's casually affectionate words and attitude cause Rachel's heart to race.......

"You're my wife. No matter if it's temporary or whatever, you're the most important person in my life."

But she lies out of guilt and they drift apart. What will become of the relationship between the two, whose love grows beyond their ability to resist?

(Source: Fairy Kiss, translated)