OmniOkami - Gift from The Ocean Ver.0.3.1 Win/Android/Mac

A story set in a small coastal town about a girl named Natsumi. She and her friend decided to become a beach lifeguard and signed up for a training course. But as you might have guessed, not everything is so simple in this story. Love for snorkeling carried the red-haired beauty into unfamiliar shallows, where she found something incredible and mysterious. This foreshadowed BIG changes in her life and the lives of her friends.