Will respond to teh oterh things soon but to answer all your questions:
-Why does Medusa's Gaze actually end the turn?
Because "Defense Break" to all foes is very powerful with good setup. But maybe skill could inflict a feew aditional debuffs to amke up for it.
Who does she refer to?
-To Nana and the Player. Nah just kidding xD It actually is a carry over, will correct that mistake!
-Please add some fly arrows here
Why? is there something on teh other side, would need to look it up, don't know right out of my head right now.
-Also meant to be unsolvable unless field skill? Is the field skill in already?
You probaly know already since you got the form, but yes that ability is in the game.
-Ifrit's Fire Cape
That is a display error in menu it actually does way more as you noticed, will correct that!
-What use are the Phoenix Feathers in battle?
They are needed for some of the forms skills.
-Pretty sure I bought one CD reduction at the dojo and my skill level was 8, which leaves me with a CD of 12 normally, so I feel cheated.
Must be a bug, will look into it. Cooldown still longer after the fight as it should be?
-How do I find the Casino Quest?
You mean the quest giver? She is in a house in the northern part of town.
-Where can I repair the smartphone?
Yes, in research lab after completing the story there. There will be a new point seeable point that can be interacted with
-Still don't know, where the last two fairy vine seeds are
Yes three buyable: Supermarket, Casino and Flower Shop in Western Plains.
Two findable in fairy buds: Frozen Tundra and Fairy Forest
-I noticed this:
That is the spot for fox demon not dog.
One of the hardest one to find in the game probaly. In the flower shop, can only be reached at night with mouse.
-Phoenix TF in the volcano and the secret TF #2
Sounds about right!
-I suppose you never tested getting Phoenix TF without Dragon TF.
Phoenix (0.6) was in the game before dragon (0.8) so I was forced to test it without. But I didn't had taht bug. Will look into it!
If I missed anything, feel free to as again!