A Bushido is a warrior that feels that a death in battle is respectful rather than fleeing like a coward.
Ryuko's mother was a bushido before him. Ryuko's father died while he was still a young boy. As a child, Ryuko didn't pay much attention to his mother's teachings. When his mother was killed by the demon Tengu her last words to him was "continue". It was only after his mothers death when he really started to become educated in bushido and became one, honoring a long line in their family history.
Like his ancestors he works for the preservation of peace and justice at any cost. As Japan's hero, Bushido battled everything from gangsters to evil supernatural forces. He wanted revenge for his mother and the death of the demon who killed her Tengu. His search for Tengu eventually brought him into conflict with the Teen Titans.
Tengu possessed Beast Boy's body while he was visiting Japan. The only thing that would stop Tengu was decapitation. The Teen Titans tried to stop Bushido from hurting Beast Boy, but when he sliced his magically imbued sword through Gar's throat it expelled the demon and killing it without hurting Beast Boy at all. It is unknown if Bushido knew that it was going to happen.
Joining Titans LA
Some time later Gar's brother matt held a meeting for a new team of Teen Titans West. When a team of Villains crashed the party only a few of the potential members stayed after the attack. Gar finally agreed to have the team re-form, and Titans West was re-dubbed Titans L.A.
The new team consisted of Beast Boy,Flamebird, Herald, Bumblebee, Terra, Hero Cruz, and Captain Marvel Jr. Meanwhile Bushido had left Japan to come to America to learn of ways to preserve justice without bloodshed. Locating Beast Boy, he elected to join Titans LA and hoped to learn the ways of peace.
Soon the new team dissolved because no one was really devoted with the team, and the team was at a end before it really started.
A Hero's Death
When the Superman Prime came to earth Superboy of earth called all the Titans who were available and Bushido was one of them. Bushido was sliced in half by Superboy Prime's eye beams. Pantha and Baby Wildebeest were also killed in the battle, and Risk's right arm was torn off. He was mourned by his friends.
Bushido became a Black Lantern
during Blackest Night
. He was one of the Black Lanterns brought to Earth-Prime by Alex Luthor
to kill Superboy-Prime. However, Superboy-Prime willingly put on a Black Lantern ring
, which metamorphed to Red
from the amount of emotion he displayed. The resulting energy blast destroyed Black Lantern Bushido.