Akegata ni Yamu Ame
From Cosmique Scans & Yaoi Is Life:
When his love stricken brother commits suicide in his youth, the footsteps left behind lead him to a detective. Because of the unusual scent of the cigarette the neighbor smokes, a maze of suspicion and doubt are created that reach the courts. A story of a painter living in isolation on the outskirts a town, and a young man who becomes entranced with a secret painting by his grandfather. Know at the end you cannot turn back when the enigma that is love calls. Three thrilling love stories.