I,
AssasinZAssasin would like to lay claim to
Matsunaga Tsubame as my second waifu, from "Maji De Watashi ni Koishinasai S",and from the anime version as well.
She's a free-willed person who does whatever she wants, and is like an idol as the "Nattou Komachi", but she has her own familial problems. A lot of the sneaky things she does and plots she contrives or goes along with are mostly for the sake of her family.
When she decides to love someone, she will love him wholeheartedly. She might try to take the lead in the relationship if you aren't careful, however, if she falls deep enough in love, she would submit to you, listen and love you all that much more instead!