Can you check the "About" section in the main menu and tell me which game version is showing? I just downloaded v1.1.0 and I'm seeing the "Side Stories (New)" option in the main menu.
Viewing post in Clawstar Wrestling Update - v1.1.0 comments
Alright that's weird. It definitely says v1.0 in my version. So I re-downloaded it and now it says v1.1.0 and the side story shows up properly. I'm really sorry if this is my mistake! I swear this is the first time I've downloaded the game and so I don't know how I confused myself this badly. :D Thanks so much for your help, though, this is perfect!