The two grew up together as sweethearts and had a very good relationship. They were not brothers but were closer than brothers. In an accident, they confirmed their feelings and lived like a couple without telling their parents. But life can be happy but also painful. After their parents found out, the two were forced to come out, but their relationship for many years would not make them give in! But God doesn't seem to favor them. Could it be that just because they have been in a sweetheart relationship for 20 years, they will kill their lifelong wishes...
"Zi Yan, I want to hold your hand and grow old together!"
"Idiot! That describes the brotherhood of sharing weal and woe and being together no matter life or death!"
"That's right! We are both men, and we are Geminis, so we are brothers!"
…
"Zixing, I want to tell you a secret. In fact, the modern meaning of holding hands and growing old together is to hold hands with you and grow old with you."
"I am honored to fulfill this oath with you."