Daiki Tomita and Koharu Kobayakawa, friends for years, broke through that wall and became a couple after she announced her shortened lifespan. As she is approaching the end of her life and they become closer, she expressed a strong desire to not say “goodbye”. When you enter each other’s lives, you connect with them. But with that connection, comes the fear of loss. What is a happy ending that no one has seen before? One that can only be achieved in this moment by them? This is the final volume of the ultimate love story.