Nice presentation! I also love the cute enemies, haha... the turtle-riding snakes especially.
My main concern was the same as Soothsayer's, there was no feedback to let me know how "replenishing" ink worked, so I felt like I was never given enough ink to do well.
I think I understand your reply to that comment, explaining that restarting the game is what gives you more and more ink- but making this explicit through text or a post-session screen explaining how much more ink you'll have if you just play again would help keep players from becoming frustrated and quitting entirely.
Keep up the good work!