Prologue

At the Shogikawa gakuin highschool, there exists a chess club. Until recently, it didn't have one, but in the span of a week, it not only gained one, but its president, Mimoko Inoue immediately rose to fame as a chess prodigy. The unbelievable part is that it hasn't even been 24 hours since she won the tournament and received not only a rating of 2700, but also the title of grandmaster. However, this is only the start of the Shogikawa gakuin chess club's tale.

News of their feats quickly swept through the entire student body at the high school, with nearly all congratulating the chess club's members as they arrived. One notable exception was the school's principal, Nagi Enoki, who sat brooding in his office as he stared at his computer. Articles of Mimoko's accomplishments were flooding the internet, however, the article that most angered him was actually one telling about how the corpse of a man named Gunther Gunnerson had been found at the venue where the chess tournament had taken place.

Gunther Gunnerson, better known by his alias, Gyro, was a grandmaster and business associate of the principal. He was also a member of the Desperado league, an infamous underground chess league. Fearing the threat Mimoko would pose, Gyro sought to eliminate her before she could be given a rating, but failed and lost his life as a result. Prior to his death, he had made a promise that he would help the principal build a shogi empire, though in secret was thinking of ending his business ties to him in favor of someone else.

...

"So Mr. Gyro's dead. Now who the hell is going to help make my empire a reality!? After Nagi was killed in that damn chess game, he promised me he'd provide a suitable substitute for me, but now he's dead too!" the principal fumed.

"Oh, you certainly seem to be relying a lot on outsiders, why not rely on your own blood?" a voice sneered.

The principal turned to see a young man that looked almost identical to Nagi, aside from the nasty scar on the left side of his face. "Kazuya, where have you been this past week!?" 

"Why should I have to tell you?" the young man sneered.

"I wish you were meek like Utami, then I could force you into submission."

"Wow, you really are a scumbag, well guess that's where I get it from. But I'm here upon request. You see, I've been working with Mr. Gyro to find a suitable replacement for dear Nagi, and what do you know, I happened to find a suitable replacement."

"Oh did you?" the principal gasped as he sprung out of his chair. 

"Yes, and they're waiting to meet you on the school roof." 

The blubbery blob of a principal was scurrying down the halls like a cheetah in seconds. 

"It's always about dominance with him. Oh how mighty your fall will be," Kazuya snickered as he slowly headed out. 

...

Utami groggily opened her eyes as a cool breeze brushed her face. She attempted to rise, only to find her wrists and ankles bound with zipties and her mouth covered with a piece of duct tape.

"So you're awake," a female voice grumbled.

Utami frantically spun her head to notice a young woman with short silver hair clad in a school uniform. "Who!? Who is this!?" she thought.

"Transfer student. Now be good and sit still. Otherwise..."

Smash!

"I'll break a bone or two," the woman glared as she hoisted her mighty sledgehammer above her shoulders.