If you're looking for manga similar to Day6: Where the sea sleeps, you might like these titles.
The comic tells the story of the first game, with Sonic traversing across South Island and rescuing his animal friends from Dr. Eggman.
Within the back alleys fusing retro and modern aesthetics, the cat in charge of the Tourist Information Center guides feline tourists to the actual shops best known for their respective cats.
You are you Tonio. All of your father, and all of your mother too. This is the story of Tonio, from before they met Mato.