When You Close Your Eyes

Roderich gets lost from his pod, because of course he does, and he decides to take a rest. Having worn himself out, he sets about singing to calm himself down, hoping his pod hears him. Vash is swimming nearby with his sister and hears the beautiful lament. Deciding against his better judgment, he investigates the mysterious song. Aus/Swiss, Mermaid AU, Part 1 of "Sing Me Away"