Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
Hamasaki Ayaka
2010-12-17
Tōkyō
Defeats Ham Seo-hee in tournament final to become the first champion; vacates on 13-08-31 due to injury.
Tomimatsu Emi
2014-02-16
Tōkyō
Defeats Mizuki (Inoue Mizuki).
Mizuki (Inoue Mizuki)
2014-08-09
Tōkyō
Starts competing for UFC in 19-08.
Izawa Seika
2022-03-14
Interim champion since defeating Motono Miki (Nakai Asami) on 21-06-20; status promoted after Mizuki vacates the title; also wins Rizin Super Atomweight Title on 22-04-17.
