Originally Posted by Skulkraken

Nutaku's Twitter account said before that rolling Chance Time while searching for Elite Guards also accesses the Event Gacha. If you've got Peronamins to spare, you might want to try using up your stamina on rolls while you have a guard active.

I'm afraid that 2 weeks and 20ish peronamins last time it was up determined that it was a lie...

Well, that sucks.

Originally Posted by Tenhou

I'm afraid that 2 weeks and 20ish peronamins last time it was up determined that it was a lie...

It might have been changed for this event... I dearly hope so.
I know I've gotten Maria in the event chance, even though I missed her when speed-running through Stage 3.