How i do the slice part on the marmaid cave?

Does anyone know how to open this cave next to the library?

Hello, I had a bug, because of it I can’t go any further.  Whole problem in the photo

When I try to open the game on andriod it keeps shutting down 

the aptitude test doesn’t work for the strength and I can’t progress without it :((

I might be dum, but do u use the mysterious coin at the fary fontain ? if not what els do u need to use to be able to upgrade my gear.

hi I am enjoying  the game town of passion but I  can't get access to snowy ridge please help me? I  am using V1.7.2 beta

Hello, good day any way to get pass the str test that Akane gives on android.

how to you feed the plant for the second puzzle stone , during the tale of the Salacious  Sakura?

i cant do anything in aptitude test of akane,  how can i do it?

how do u get past the scary pillers

Hey, I'm trying to get through the Siren's, your, trial; but I'm stuck on the very first one. There's nothing to slice! I followed the instructions to the T, even took a screenshot to make sure I was doing it right.