Simplify the following text for a Grade 9 native English-speaking person.
Original: Series creator Brian K. Vaughan pitched Runaways in 2003 as a part of Marvel 's Tsunami imprint , the goal of which was to attract new readers , particularly young readers and the manga audience . Marvel editorial staff agreed to it immediately , prompting Wizard Magazine to name the series as `` one of the best original concepts from Marvel in thirty years . ''
Simplified: After Marvel canceled the Tsunami imprint in January 2003 , the series moved to the `` Marvel Age '' imprint .