The theme song by Koushi Mizuna

A young woman with long dark hair turns her head to look over her shoulder against a blue bokeh background. A young man with spiky brown hair looks upward under a blue sky with white clouds. A young man with short black hair turns his head to look over his shoulder, standing on a street with houses and the ocean in the background. A hand in a patterned sleeve reaches out to press a doorbell on a green wooden door. A young woman with long dark hair swims underwater in a black swimsuit, surrounded by bubbles. A close-up shows a large eye with a purple iris and white sclera, looking forward.