Conversation so far:
What did Sugizo do in his solo career?
After Luna Sea went on break, Sugizo started his own solo career and opened the independent label Cross to produce other artists, as well as releasing his own records.
what was the name of the label Sugizo opened?
Cross
did Sugizo release any singles in his solo career?
On July 9, his debut single Lucifer was released

Question: was it successful?
Self-contained rewrite: was Lucifer by Sugizo successful?