There's a cosplay/anime/japanese traditional culture event part of the Automnales. There's supposed to be stands (not the spiritual power double, I mean shops! Otaku pun intended), a cosplay competition, workshops (traditional culture and cosplay), and a famous swiss cosplayer couple meet & greet.

There's also a small Japanese restaurant, from what the website says.

It might all be in French, but if you're just there to watch, it can be fun too.

Entry fees: 14CHF Adult OR with the Automnales General Entry Ticket.
7 CHF AVS/Children

Meeting spot to be decided depending on number of attendants. You're welcome to join in cosplay or J-Fashion.