The protagonist of the hentai is an ordinary Japanese kid named Sota. He was born and raised in a small fishing village on a remote island with a population of only 4000 people. Since childhood he has been friends with a girl named Mashiro Wakana, who became like a sister to him. However, the older Sota became and the sexier and more mature Wakana's body became, their feelings for each other escalated. Eventually Sota was forced to leave the island by his parents without admitting his feelings. A few years later, he returned and met Wakana again. Three years later she was a real sultry beauty with huge tits and ass. Sota was overwhelmed with joy and surprise at being reunited with his childhood friend that he immediately confessed his love to her...