Similar to the creation of Nanaru, Maiga created Rika when uploading for a thread on 2chan.

Rika is a trainee who trains under a sensei called Kara Aviva. She utilises a martial arts known as Prim Hearts, which is a completely new martial art that uses the power of the Kundalini (coccyx chakra) to fight.

To help her sensei further the development of Prim Hearts, she made the decision to participate in the Eight Marbles Tournament to obtain the Golden Orb, a powerful tool that allows the user to make any wish they want to come true.

A taunt that can be cancelled with a normal or special move. If successful, the Special Gauge will increase.

Rika creates a spirit bullet before shooting it with her rear.

You can move after deploying the move allowing for some basic tandem attacks. Compared to Nanaru's version, it is a lot faster.

Rika spins around and hits the enemy with a powerful hip-attack.

On hit, Rika presses her butt against the opponent for high damage.

Rika dashes and performs a hip-based attack.

It can be utilised as a surprise attack

A & B variant = straight forward with varying lengths - you can use this and cancel it into another special move.

Rika performs a powerful hip-based attack from a jump.

As Rika ascends, she has i-frames.

This move is good for mid-range surprise attacks or to combat anti-air attacks.

Rika performs a move has her grab the opponents head and presses it directly into her butt.

There is windup, but because there is i-frames on startup, it can be used to counter attack.

It is possible to follow up after getting a hit in.

Uses 3 bars of gauge.

Rika jumps in with a dash and on hit, she traps the opponent and performs a wild dance on them.

It is a good super that starts with a rush and can be easily incorporated into a combo as a finisher.

On hit, it shifts to a move not unlike Peach Bazooka.

Uses 3 bars of gauge.

Rika causes an unblockable earthquake by dropping down to the ground with a fast, powerful hip-based drop.

Time stops during the move.

Rika gets no i-frames during the move, but since it has a rather fast startup - it can be used as a combo finisher or for anti-air attacks.

Uses 3 bars of gauge.

Rika creates an doppelganger who then mimics her moves and squishes the opponent in-between her buttocks.

Treat this move like a stronger variant of Pretty Plums.