The eldest young master of the Jiang family, Jiang Yuan, and the eldest daughter of the Ji family, Ji Jingyi, were tied up as a family marriage partner. The second young lady of the Jiang family, Jiang Yun, returned to China for an engagement party, fell in love with her sister-in-law Ji Jingyi at first sight and had a relationship. The two healed each other and eventually got married.
"I was... Slept with by my future husband's sister?"
"My name is Jiang Yun, Miss Ji, I am my lover.
Purpose: Healing each other. Direct same-sex love is also beautiful.