I have another Japanese drama to rec - Maou (魔王).
It's so dramatic. I watched the first 3 episodes over a couple days, and then watched the last 8 all day on Sunday. By the last episode, I was literally on the edge of my bed. The music is wonderfully haunting and I love the atmosphere. The ending, while depressing, was perfect and really the only way it could have ended. As with most shows I'm watching these days, I only started because Toma is in it, but I'm so glad I did.
My current background(s) (from here)-

And here's the opening -
This drama is a remake of the popular suspense drama The Devil that was aired in Korea last year. Ohno Satoshi will be playing the role of a two-faced lawyer, one of which is a kind hearted soul and the other who is plotting revenge, using his brilliant mind, on the person who killed his relative. On the other hand, Ikuta Toma will play the double lead role of the man, who has become a detective due to his dark past, who is pursuing the mysterious series of murders and fighting against the devil (maou).
It's so dramatic. I watched the first 3 episodes over a couple days, and then watched the last 8 all day on Sunday. By the last episode, I was literally on the edge of my bed. The music is wonderfully haunting and I love the atmosphere. The ending, while depressing, was perfect and really the only way it could have ended. As with most shows I'm watching these days, I only started because Toma is in it, but I'm so glad I did.
My current background(s) (from here)-
And here's the opening -