The Yakuza

The Yakuza is a hypothetical character that will provide Yandere-chan with favors and assist her in eliminating her rivals in Yandere Simulator.

Note: Whether The Yakuza will be implemented into the game or not is undecided.

Appearance
The Yakuza is a smartly dressed, serious looking adult man.

He has black hair, eyes and facial hair. He has a red, white and black tattoo sleeve on both arms.

According to the Yandere Simulator Website's character page, his appearance will be player determined.

Description
"A hypothetical character who is not yet confirmed to be a feature of the game; the below information may be subject to change.

If Yandere-chan can perform a massive favor for one of the school's students, that student will introduce Yandere-chan to his brother, a man with connections to Japan's criminal underground. The man's affiliations and methods are unknown, but he has a reputation for "making problems disappear" - for a price. He doesn't want to be paid in cash...he wants human bodies. If Yandere-chan kidnaps some of her classmates and delivers their unconscious bodies to the Yakuza, he will eliminate one of Yandere-chan's rivals for her. Some rivals would be eliminated for cheap, but others would carry a heavy price.

He is tight-lipped about the ultimate fates of his victims. Does he assassinate them quickly and painlessly? Does he kidnap them and harvest their organs? Or does he do something even more sinister? He has no intention of revealing what happens to the students that Yandere-chan supplies him with."

Younger Brother
The Yakuza will repay his brothers debt to Yandere-chan, should he need to.

Trivia

 * As a specified character, he was introduced in the video, Yakuza in Yandere Simulator.