Broken Vows Trailer(Yamaki)Story : Iswase Kurosagi was going to marry the daughter of one of the richest and most famous company in Japan - Mishima Yukari, whike his little brother, iswase Akira will get married to the daughter of a middle-classed family - Yoshikawa Tsurara.
One day Kurosagi was on his way to work, when someone fell unto the trainine, without thinking Kurosagi saved her, a beautiful, innocent girl - Tsurara. As the sun sets that day they found out they were going to be siblings. Tsurara however begins to grow strong feelings for her brother, but kurosagi out of love for his brother rejects her and buries his newly found feelings for her. But the more he pushes her away, the more she loves him.
As a story of forbidden feelings and selfish desires unfolds four people become aware of who they really are and the uncovered secrets that lie between them.
Just so that you know the trailer is missing alot of stufff that happened or is going to happen in the fanfic, so its knda lame.