Unubore Deka (2010)

Both are comedy-centric with slight romance stories written by the same screenwriter and starred by TOKIO members. Supporting characters in both dorama also share roughly similar quirky antics. It's just so funny to watch how they all interact.

Both dramas have a certain kind of humor that is enjoyable and have crazy, hysterical leads! Also, both have TOKIO members as the leads.

Both about detectives that fall in love with criminals they should be arresting. Except the genders are reversed.

What's more important love or solving the cases?

Both have Nagase Tomoya as the lead and are fairly comedic as well.