Conversation so far:
What happened in 2008 with Gackt?
On December 3, 2008, Gackt's twenty-eighth single Jesus was released, his first single release in over a year.
Was Gackt's single, Jesus successful?
Gackt's single, Jesus peaked at number seven, spending 10 weeks on the charts.
Did Gackt tour around 2008?
On December 14, 2008, Gackt went on his longest nationwide tour Requiem et Reminiscence II -Saisei to Kaikō-, which included over 60 concerts in more than forty-five cities.

Question: how long did they tour for?
Self-contained rewrite: How long did Gackt tour for Requiem et Reminiscence II -Saisei to Kaikō-?