When Yu-me were 13 years old, she moved to africa along with her mother and Lupin the third´s family.
In africa Yu-me also had her first boyfriend, a 15 year old guy named Mabu. Their realitonship weren´t so healthy Mabu forced Yu-me to do a lot that she didn´t want to do, like loose her virginity. He also told her that if she disobey him or tries to break up he would KILL her.
Lynette is the daughter of Lupin the Third and on/off again lover Fujiko Mine. Since Lupin’s enemies would try to use Lynette to get to him, Fujiko kept her a secret from Lupin and trained her (along with help from Jigen and Goemon who promised not to tell Lupin about Lynette) until Lynette was 16 years old. At that point Lupin took over her training and after passing her final test with flying colors got the ok to go solo. At this point she was introduced to Jigen’s daughter Flo and Goemon’s daughter Kosuke who became part of her thieving team though like her father, Lynette soon found herself being pursued by a detective.