Artist's feed is motoi_00590265.
Is using the feed sufficient? The name is rather clunky, should I write it as motoi_(00590265)?
Sure, write it as motoi_(00590265) like you said... the most important thing is that it's unique.
Xiaoxiaoxiaomo... it's in his BCY name as well.
小小小丶默 ~> Xiaoxiaoxiaomo