Janken Tournament

Janken Tournament was announced by the OHI48 Theater General Manager, Natasya Maria Desy Natalia. She announced that the Senbatsu Members for OHI48's 12th Single were going to be selected by a Janken Tournament (also known as Janken Taikai in Japanese). All the 48 Members from OHI48 were randomly shuffled during the concert to decide the order of the matches. The winner of the Tournament would become the center of the single.
==Members==
*12th Single Senbatsu Janken Taikai- All promoted OHI48 members.
*21st Single Senbatsu Janken Taikai- All promoted OHI48 members, 51 members of JKV48, 22 members of STE48
*26th Single Senbatsu Janken Taikai
*33rd Single Senbatsu Janken Taikai
==Results==
12th Single Senbatsu Janken Taikai (Top 16 would form Senbatsu for new OHI48 single with the winner being the center)
**56 members participating
**Winner (Center for Namida Surprise): Ocean Mist
21st Single Senbatsu Janken Taikai (Top 16 would form Senbatsu for new OHI48 single with the winner being the center)
**133 members participating
**Winner (Center for Halloween Night): Bianca Morgan Hayter
26th Single Senbatsu Janken Taikai (Top 16 would form Senbatsu for new OHI48 single with the winner being the center)
**TBA members participating
**Winner (Center for Universe): TBA
33rd Single Senbatsu Janken Taikai (Top 16 would form Senbatsu for new OHI48 single with the winner being the center)
**TBA members participating
**Winner (Center for Jabaja): TBA
== Costumes ==
For the costumes, the girls are permitted to wear whatever they want. This later became an important part of the event, with several TV shows and magazines specials focusing only on the costumes used on the events. This costumes vary from clothes used on theater performances to regular clothing and cosplay.