Entwined serendipity

[Duan Zhao Year 4, June 25]: SOS! I was thrown into the "past life" with my best friend, and I accidentally KILL her at the start! What should I do?! Waiting online, urgent! [Duan Zhao Year 4, September 1]: Oh! It's okay now! I found my best friend, she didn't die! She turned into a man! Oh ho! And she's a prince! [Duan Zhao Year 7, November 6]: (Posted using borrowed account): I... I... What should I do... An'an... An'an... My heart is breaking...(Deleted) [Duan Zhao Year 8, February 5]: My best friend said... she wants to marry me...(The old year's lingering cold hasn't gone, the cold branches still hold the frost) [Duan Zhao Year 9, August 1]: My best friend raised a ring inlaid with agate, asking me to marry her... It hurts... Oh damn, I've fallen into the pit I dug for myself, The Manipulative script... Years later, when he found out that she had been betrayed by the man she deeply loved, without saying a word, he raised his dagger and was about to stab it into his lower body. She slapped it away, shouting: "What are you doing?" "I'm castrating myself. This way, you won't be afraid of me, the man I've become." [Serious Note]: There are four main characters, each appearing in separate chapters, far apart from each other. The relationships between the characters include friends, lovers, spouses, mother-daughter, father-daughter, but all are non-typical relationships that cannot be simply defined by these terms. In short, it is a story of intertwined fates across time and space, a tangled mess that no one can sort out. 1.As for whether it’s a bad ending or Happy ending, it’s also non-typical, and open to interpretation. 2.The best friend is an important character, but not a main one, and will appear in later chapters. 3.Characters are not purely good or bad, they are just different due to their perspectives. 4.The story is complete, although still undergoing adjustments, but all side plots and foreshadowing will be tied up.