The game has added exclusive storylines for two female characters. You can go to the gym after the massage parlor closes at 8:00 PM. At the gym, you can enhance the main character's attributes and interact with the new female characters.
If your relationship with the new character is close enough, something very special might happen in the massage parlor's break room~
The DLC for Yakuza Rogue2 has been officially released today
Source: Steam Community (opens in a new tab)