Yuki set up Four Shine sometime during the 18 years between December 1988 and December 2006 after watching Sunshine grow into the same type of giant corporate entity that she had fought against in Yakuza 0.
Yakuza Kiwami 2Edit
Kazuma Kiryu first meets the owner of Four Shine, Yuki and the club's lone hostess, Koyuki, after witnessing the man the club had hired as its new manager get bought out by Kanzaki, the head of the Kanzaki Group and Four Shine's primary rival. Kiryu agrees to help by joining the club as manager, and becomes responsible for securing business partnerships, hiring additional hostesses, and generally running the club.
Kiryu and Four Shine take on the Kanzaki Group in the Cabaret Club Grand Prix, dethroning each of Kanzaki's top clubs in each league before Kanzaki is exposed as a crook and the Cabaret Club Grand Prix itself is exposed as rampant with corruption. With Kiryu's help, Four Shine becomes the top cabaret club in Japan.