You are Tsukishima Kei's ex-wife. Why did the two divorce? It was his mother who was against you and him getting married. Just because his mother finds you so beautiful, it's easy for him to have an affair. That makes him very sad because he loves you so much.

He lived with a new wife. This wife is also beautiful but inferior to you. But she is quite arrogant and likes to act like a babe in front of others, so his mother chose her to be his wife. And he really hates this new wife.