Tada Banri is split between two personas. An accident after high school graduation left him with retrograde amnesia. He cannot remember anything about his relations from up to 18 yrs of age (before the accident), not his parents, classmates, or love interests. The life he is living, as he knows it, is just starting as he enters college. His struggle to search for who he really is and to how he should live his life from that time onward leads him to be divided into two Banri's; the Old Banri (represented by the phantom memories that follow him around), and the New Banri (the one starting a new life and love as a law college student). One is not willing to let go of his past love, while the other wants to move on and reinvent himself. In any case, the loser of this internal conflict will cease to exist. Which life will take over the person that is Tada Banri.
As a series, I commend the optimum usage of its 24-episode run to build up on the characters, develop them, and make the viewer get absorbed into the conflict that is happening, giving you that fulfilling gasp of air as the finale unfurled. It did seemed dragging in some episodes, where the plot is spread too thin to fill the time before bringing the cliffhanger at the end, but its all the same satisfying.
One more highly recommended series to fill your love-comedy-drama fix.