- The war.... has begun.
— Hasebe, Yakuza 3
Hasebe is a minor antagonist in Yakuza 3.
Hasebe is noticeable due to his cornrows and his bright purple suit with a yellow shirt. He also wears a fancy, gold cross on a chain around his neck.
Hasebe was a member of the Nishikiyama Family, who rose to prominence within it under the leadership of its Third patriarch, Tsuyoshi Kanda, after he took control of the family following Koji Shindo's demise in 2006. By 2009, Hasebe has become the family's captain.
In 2009, after Sixth Chairman Daigo Dojima is shot, Kanda desperately wants to become his successor. To that end, he plans to go to war against his rivals, the Kazama Family, to take all their territory in Kamurocho and thus give himself the money he needs to procure the chairmanship.
On Kanda's orders, Hasebe goes to Stardust along with his men to take over the club so it can serve as their base of operations for the war. Hasebe tries to buy the club for 300 million yen but the owner, Kazuki, correctly deduces the purpose Kanda will give his club if bought and refuses. As the discussion starts to get heated, Kazuma Kiryu arrives after having noticed the commotion caused by the Nishikiyama Family men barging into the club. Though Hasebe warns Kiryu not to get involved, Kazuma refuses to stand down when his friends are being threatened, so the confrontation escalates into a fight.
Ultimately, Kiryu, Kazuki and Yuya defeat Hasebe and his goons, driving them out of the club.