Bellflowers

Osamu Dazai is a young and successful psychiatrist who was always kind and a gentleman until a certain event which caused him to lose the will of live and anything at all.
He helped numerous serious cases to heal and brought them back to the society.
He had gained most of his co-workers' trust.
He changed a lot though after losing the person he had been together for 15 years.
He fell into the depths of the darkness and despair.
What happens if he meets a mysterious patient who has his own scars?