The Persona series portrays Tamaki as a headstrong young woman who's not afraid of danger. She can be sickeningly sweet with the person she's in love with and yet go from that state to dead serious when necessary. However, she has trouble admitting those feelings in the first place and will hide under a mask of aggression towards the person she's in love with.

Tadashi and Tamaki are basically always together so ideally some good chemistry there would be grand.