The Baby Daddy

In Japan there is this term "Charao" which means a Superficial Flirtatious Playboy. The protagonist, Takeshi Miyamae is senior high student living in Japan is a prime example of this. He always tries to hit on girls and often goes to "Goukons", a term for random dinner dates, where he can meet and talk to new girls each time. He loves women and has had sex with numerous partners to date. He's even gotten a girl pregnant!