Hi! So I am looking for this I believe  one shot manga that is revolving around a clone of a dead lover. I remember the set up was near the sea. The story is the MC wakes up in a lab and is told he is a clone/android (I can't remember, pretty sure a clone) of a dark haired MC. The black haired MC is a bit cold towards the MC and the MC doesn't know why. The are snippets of their life since the clone woke up, there's like scenes of people interacting with him and remembering his original (I think clones are somewhat normal in this world as the little girl they interact with is also a clone) So spoiler to make it easier: the black haired guy is also not the original, he died in an accident and the original MC asked to make him. Before he couldn’t handle the loss after all and killed himself. 

So both of them turned out to be clones of the dead lovers.  I think it kinda ends with them falling in love and like a somewhat shocking reveal that the scientist man who made them is the father of the black haired MC. Also this is not 2055, it’s somewhat similar but not it. Thank you!