what's the meaning of "naniseyo" and "umaikoto oyoguna"


in the first pic, the girl fell into another world inside the well and she was just came home from thet world.
does "umaikoto oyoguna" mean "he swims wells" or "i wat to swim too"?
thanks!
This was in the garage of a house we moved into. The previous owner had been stationed in Korea and had visited Japan. Would anybody know what…
Is there a difference between 諦める and 諦めがつく?
I am having trouble understanding what "グズグズ" means in this sentence: あのグズグズだった頃の俺の心がお前となぁなぁになる事をまだ許していないのは確かだ