Nagi No Asukara - Vol. 3 (episodes 12-16)

Winter is approaching, and Hikari, Manaka, Kaname, and Chisaki painfully realize that they may never see each other again. Before it's too late, they want to confess their secret love for one another. This is a plan that overwhelms not only Manaka. When the ship parade finally takes place, a tragedy occurs that no one expected. It will be five long years before the friends can see each other again. What will the separation mean for them? What, and especially who, will change? Or will time simply stand still, and everything be as it was when they reunite?.