Immortal Shadow in the Mirror: the Peach Blossom Tribulation of Three Generations

She is the fairy in charge of peach blossoms, and he is the coldest god of war in heaven. Three lives and three lives, they are always missing out. In the first life, she was a mortal and he was a heavenly general; in the second life, she was a demon and he was an immortal; in the third life, they finally stood on opposite sides. When the love catastrophe of three lives and three lives is over, can the original sincerity be restored?