Sou Ichinose

The most popular guy in school, who Ai has a crush on. The vulgar, bad guy type. According to him, he lost his virginity at age 12. He's dated a lot of girls just for the sake of getting in their pants or just because he felt like it. This changes when he starts going out with Ai. He has a pretty harsh life at home. His father, a congressman, is actually not his real father. His mom feels guilty about this and tends to take out her anger on him. Nevertheless he still acts carefree all the time. He's been friends with Yuichiro ever since kindergarten and since then they've been in the same class. He says his number one goal is to make his life miserable. (Source: Wikipedia)