query: When was Wrestle Kingdom 9?
passage: Wrestle Kingdom 9
Wrestle Kingdom 9 in Tokyo Dome was a professional wrestling pay-per-view (PPV) event produced by the New Japan Pro Wrestling (NJPW) promotion, which took place at the Tokyo Dome in Tokyo, Japan on January4, 2015. It was the 24th January 4 Tokyo Dome Show and the first event on the 2015 NJPW schedule. The event featured ten professional wrestling matches and one pre-show match, six of which were for championships.
passage: Wrestle Kingdom V
Wrestle Kingdom V featured thirteen professional wrestling matches that involved different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portrayed villains, heroes, or less distinguishable characters in the scripted events that built tension and culminated in a wrestling match or series of matches.
Wrestle Kingdom V was headlined by Satoshi Kojima defending the IWGP Heavyweight Championship against Hiroshi Tanahashi in what was described as a "typical" NJPW storyline, where the company had put their top title on an outsider, leading to their biggest star getting it back at the Tokyo Dome. Kojima had started his career in NJPW, but jumped to All Japan Pro Wrestling (AJPW) in 2002 and was now working as a freelancer.