In his past life, Ethan and his friends were on Lacuna Island when attacked by a lake monster. His girlfriend and best friend betrayed him, pushing him into the lake. Reborn to the moment he arrived, Ethan tried to warn everyone, but no one listened, leaving him to prepare alone. When the monster was about to attack, Ethan hid, refusing to go fishing, mocked by friends. Only when the monster arrived did everyone understand, but it was too late...
