This story somehow reminded me of Nicholas Spark novel "The Notebook".
As it really happens in real life, even though two people are in love, there are a lot of obstacles in their way simply because they are not alone on this planet.
In the end the choice is made between true friendship and love.
I liked the sad reality of this story which was intertwined in every chapter, it made you also feel every character`s pain and wish for happy ending.... which is not always the only end of story.
Overall 7/10 for this manga.