Nishikawa Takiji.
Hisaki couldn't really recall everything she knew about him. But, she was certain he was the same Nishikawa Takiji who cornered Mari to death in her previous life.
He was a crude businessman who often preyed on young girls. One of them shook her fear away and approached Mari with the evidence of sexual assaults.
Unfortunately, Nishikawa Takiji was a tough opponent. He spun lies and fabricated the pieces of evidence, framing the victim as a gold digger who couldn't accept the end of their relationship.
The young lady's life was exposed to the world. Okawa Hitomi secretly played a role in allowing the man to win the cards.
Despite Mari's constant reassurances to fight the scum man to the end, the victim fell into a heavy depression and took her own life.
Her death ignited a blazing fury from her family members. They called Mari incompetent and sought her out in anger.