game ; I use niconico to listen for FKG or GS BGM never DL it.
But seem some download manager program can DL BGM, yet again never try.

About whale I currently run 5-5 since it's the most easy to arrange squad.
According to wiki the whale medal ratio do increase in higher map.
You get 3.862 ratio (309 medal) for 4-5 but get 4.125 ratio (330 medal) for 5-5.

If your grey-whale TP is nearly 1.1 M so it's worth to try map 10-5.
But careful of those transformers pest it's hit our girl hard.

maotd ; There is rumor that some illustrator do draw charector for free.
Because they swear that they will be loyal slave to Flower Garden World LOL.