THE LONGING BUTTERFLY

If I asked you to tell me a sad story, you'd have so many. But for him, he had only one. "Love you, Cutie!" His 3-word sad story.
Shen Wei; hiding something from his twin. Will he be able to hide it forever?
Yezun; Is loving his own mate unrequited? Taboo?
So who is The Longing Butterfly here? let's find him together and heal him!
A Guardian fanfiction. A fantasy, horror one.