A romance drama about two separate lives forced to work together. Rio, a high school student, is madly in love with the girl of his dreams but is too scared to tell her how he feels. When his life is cut short, he misses the opportunity and isn't ready to move on. The only person who can help him crossover is Yoru- the one who receives Rio's heart from a heart transplant. Feelings become complicated when Yoru encounters Rio's crush. Is it really the heart that loves or the person owning the heart?