Instead of continuing her amateur wrestling career in a university, Nagashima took part in an audition held by professional wrestling promotion, Gaea Japan, which she passed with flying colors.
Chikayo Nagashima holds the record for the longest reign, at 395 days.
SonChika's (Chikayo Nagashima and Sonoko Kato) second reign holds the record for the shortest reign, at 14 days.
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The championship was introduced on July 13, 2008, when Carlos Amano and Dynamite Kansai defeated Chikayo Nagashima and Sonoko Kato in the finals of a tournament to become the inaugural champions.
In the second match El Oriental teamed with Japanese female wrestler Chikayo Nagashima and Mexican Exotico Pimpinela Escarlata to defeat Takashi Sugiura, Cassandro and Faby Apache in just over 13 minutes when Pimpinella Escarlanta forced Cassandro to submit.