Innocent Love (2008)

The main women in this drama both overcome past traumas and abuse by those most trusted in their lives. They learn to trust and find happiness, healing and love through the help of those closest to them. In both stories, the main couples learn what it is to heal each others past hurts and betrayals.

The synopsis about a brother in jail who allegedly murdered someone and how it affects the protagonist's life is the point of similarity between the two works.
A sinopse sobre um irmão na cadeia que supostamente assassinou alguém e como isso afeta a vida da protagonista é o ponto de semelhança entre as duas obras.

both dramas involve revenge, losing memory in a tunnel, and melo things!

Both are Japanese language dramas that show how family members of a criminal (who might even be wrongfully accused) are ostracized by society.

Has a similar feel as it is written by Taeko Asano who wrote the screenplay for Last Friends. Deals with darker aspects of love. Opening is also sung by Utada Hikaru. If you liked one you'll probably enjoy the other.

Both dramas are about main lead girl went through trauma in her past and doesnt remember correctly what happened.. later on, she finds out the truth about her self and how she deals with it