Yuki, a cheerful girl who returned to Japan after growing up long enough in London. This is where she found her strength in helping people who are desperate and trying to suicide. But without realizing it, in the end she was the one who needed help the most. Shin, a cold boy who finds the warmth from the green eyes of a girl who pulls him into the adventure of saving injured souls. Until finally he realized that Yuki's soul, the girl he loved, was the one who hurt the most. This story tells their journey to rediscover the reason for living their life, once again. Together, they were like warm sun in the piercing air in the middle of winter. Soothing. They are like cold winds in the middle of spring that fly cherry petals. Beautiful. Those two souls are destined together. Inseparable.