Per Wiki: Mimasaka is arguably the kindest and most mature member of F4. His family is very powerful in the Japanese underground (in the manga they own a large trading company). He keeps his cool and rarely loses his temper, although when he does, even Domyoji has to run for the hills. Akira is the other of the group's two playboys. His tastes tend towards older women, mainly because of his mother's childish ways. He has two younger sisters who are twins. He is also the one F4 member who like to and only uses cash. It was revealed in a special chapter that he actually had romantic feelings for Tsukushi, as she sees him as the man that he is, and sincerely appreciates him for it. Tsukushi also makes him realize that since he helps balance F4 out, a supporter if you will, that if he ever leaves them, the F4 will fall apart. However, he keeps his feelings to himself, due to the fact he cherishes his friendship with Tsukasa.....He also often joins Sojiroh in teasing Tsukasa about being a virgin. 

Makino Tsukushi: a girl who comes from a poor family just wants to get through her 2 last years at Eitoku Gakuen, quietly. But once she makes herself known by standing up for her friend to the F4, the 4 most popular, powerful and rich boys at the school. She gets the red card: F4's way of a "Declaration of War". But when she doesn't let herself be beaten by them and is starting to fall for one of the F4; Hanazawa Rui. She starts to see that there is more than meets the eye...
 
(Source: Anime News Network)

Date of birth: 1967-03-14
Hometown: Kanagawa, Japan

Tsukushi Makino is accepted into the prestigious, Eitoku Academy. Life changes dramatically for Tsukushi when her friend falls on Tsukasa Domyoji. Tsukasa is the explosive leader of the "F4," a group of the most powerful, rich and handsome boys. Domyoji refuses to accept Makiko's apology and Tsukushi steps in to protect her friend. A red tag appears in the Tsukushi's locker the next morning which is a sign from the F4 that she is to be bullied by the school. Tskushi continues to stand up to her oppressors.
 
(Source: Viz Media)
 
Included one-shot: End of the Century

Akira Mimasaka