I'm not quite sure on the t-shirt slogan. The words mean something like "leaving the deep oceans" or something along those lines, but I could be totally misreading it or missing a reference. For now, I tried to make it sound catchy (corny?).
Mm!Mm—!Isolated islandDon't like it!Wh... What's wrong...?Abyssal Reversal*shake*Eh? You want me to teach you how to do proper manicure?*ruffle**sob*sob*Onee-chan's hand... rough and scaly...Isn't that Wanko?Oh...?There... there... good girl...Yuzuki Gao