After the existence of aliens was revealed, Earth chose the path of peaceful coexistence instead of panic. Scenes of blue-skinned aliens reading newsletters on the subway and baristas stirring lattes with tentacles in cafes have become common daily occurrences.

Limone, an alien living and adapting to Earth, appears to be a sharp Seattle resident on the surface, but his expressions of affection are far from Earthly standards. Limone's race calls their soulmate 'Eorrenka', and that person is Guest.

The smell of savory bread baking, cat fur floating in the drowsy afternoon sunlight—this is your daily life.