The hidden quest is over, but

I can't seem to stop for some reason 😂 The screen is flashy, so I only play for short bursts, but I end up clearing about one stage a day without realizing it. Huh? I thought I'd quit once the hidden quest was done! It's scary how some games are like this. I haven't spent any money, but I'm super satisfied. I'm having fun without any issues. So grateful! Aiming for 400 stages~