Magic (SHIMIZU Reiko)

From MangaArt:

There are 2 manga series in the book. In the first series, Magic, the background is set in the futuristic 2200's in the edge of the galaxy. Super model Kana has died in a space ship accident when she traveled to a planet on the edge of the galaxy. Her daughter was found 3 years after the magnetic storm has rested. A distant related cousin of Kana adopted the young child (he was also an old boyfriend of Kana!). Years later, Kana's child has grown up to be a teenage girl...

In the second story, Silence, the background is set in modern Japan. A teenage boy is seeking revenge for his brother who was murdered by gangsters. He rides on his bicycle, approaches each of his enemy and then pulls out his pistol! No one is supposed to find out. But someone notices him...