This series is a "must see" for every Thai BL lover, but I think that anyone can enjoy it too, because the story is quite unique and moving. When we meet the main character, he feels unhappy and his life is meaningless, even though he seemingly can have anything he could wish for. Dramatic events of one night set him on a completely new course. Guilt, redemption, hope, friendship, love, caring for others - you will find all these strong emotions, beautifully acted by the main and supporting cast.
I encourage you also to watch the BTS materials, to see how much effort and dedication was needed to film this series, so that we can enjoy magnificent landscapes of northern Thailand and immerse ourselves in the life of a small village by the mountains.
It'a a 10 from me.