Mikane and the Sea WomanMikane and The Sea Woman; ぼくと海彼女; Boku to Umi Kanojo

It's not like I dont belong here One year ago, a young boy named Mikane moved back to a small island in Kyushu. The locals are warm, his father is brusque yet kind, and he has a good friend who worries for him. Despite having so much, Mikane feels dissatisfied and lonely. Then, one day, he saves a mysterious, beautiful woman from the sea. His meeting with this onee-san will drastically change his destiny!!