Extra 5: A featurette on the Kirikawa sisters

Ina Kirikawa, Miga Kirikawa, and Fleur Monique, real-name Fufu Kirikawa, all age 23. Heights: All 165 cm. Occupations: Ninja and WWCF agent, Ninja and WWCF arbiter, and fashion designer and SPCM, respectively. Favorite chess pieces: The knight, pawn, and pawn, respectively. 

Born into the illustrious Kirikawa ninja clan as quintuplets, the three and their siblings were raised in the art of ninjutsu. With chess gaining prominence in the world, the three quickly found themselves learning chess, with Miga being the most skilled of the three, eventually achieving the grandmaster title and 2700 rating. That being said, Miga prefers arbitrating far more than playing. Ina, on the other hand, enjoys playing and wants to one day become a grandmaster. 

Ina aspires to one day be a skilled player like Miga, but is still far from her level. She often finds herself doing the most undercover field work for the WWCF of the three, though following her harrowing escape from London, she's retired to take on more administrative work at WWCF HQ.

Fleur, meanwhile, latched onto was fashion. Under the guise of going to France to become an information gatherer for the sake of the clan, she moved to France and became entangled in its fashion industry. There, she met Fifi and fell in love with her.

Like her sisters, Fleur is skilled in chess, being the second-strongest of them. This helped her impress the French maestro enough to be granted an SPCM spot in France. While she does truly gather information and report it back to the clan, fashion is her true drive along with Fifi. She's even allowed herself to become Fifi's model, resulting in her current flamboyant look of a half-shaved head along with numerous tattoos and piercings adorning her.