If you're looking for manga similar to Cigarette Girl, you might like these titles.
2045. Virtual reality is a part of everyday life thanks to the "epo-C" info terminal brain implant. S is the name of the VR world; SX is the name of the adult VR world! Communication as we know it has been changed forever... as has the love lives of all high school students...
Do you want someone dead? Maybe there's a bully harassing you at school? Just contact the Tranquility Support Center. They'll deal with your problem by killing the person harassing you! Of course, there is a price to pay, but it's worth it, right...?
Medusa is a story of siblings Tatsuo and Yoko, that starts during the peak of the turbulent Vietnam War years. Tatsuo is a straight-laced Tokyo College student, the adopted son of a liberal politician. His sister Yoko is a revolutionary who plans to change Japan through protest; he plans to change Japan by rising in politics. Despite their similar views and love for each other, their different approaches lead to a conflict that drives them apart.