Two Men fell In love with each other, they both love each other deep down in their heart so the universe killed One of them and the one had to suffer from his death. 

but decades past both of them got reincarnated, where same sex relationship isn't forbidden. in there past life both of them promised with with each That they will be waiting for each other in their Next life.

But Allan lost his memory and couldn't remember anything because of his past life trauma before. but his lover Leo keep loving him even if he has no memories.

in every universe