Soul Mechanic and Dr. Rintaro have a lot in common. Similar story and characters. Both are about a psychiatrist working in a hospital who is excellent but somehow different: He often doing work even outside of his workplace, has an ideal of healing everyone and uses unorthodox methods to care patients, and eventually geting himself into trouble. Both has a Doctor Patient Relationship. Both young woman has seriuos mental illness because of a childhood trauma related to her mother.

Similar story-line: The hero(ine) travels into the past, and than stuck there...
In both you can find: timeless love, introduction of modern thinking and devices and funny moments.

In both movie the boy meets a girl and he falls in love with her at first sight. They start to enjoy happy days together, but than the girl reveals a sad secret...

Both revolve around time travel and love. Both takes places in the Warring States Period, one in Japan (Ashi Girl) and other in China (A Step Into The Past).

In both dramas two unrelated people starts to live together without any feelings, but later on they learn to care for each other and become inseperatable.