four best friends living on two floors of the same apartment building navigate marriage, friendship, idol life, and adulthood alongside their husbands from riize. between late-night drives, shared meals, rooftop talks, and hallway conversations after midnight, their apartments slowly become less like separate homes and more like one small family.

kim lia came to the island to forget deadlines. lee anton came to forget his inbox. neither came looking for love. they met by chance at a beach cafe, two exhausted strangers sharing a table because every other seat was taken. a laugh here, a walk there. nothing serious. just something nice for a short trip. then the storm hit. now they have extra days they never asked for, and a connection they never expected. late-night talks, sunsets that turn into sunrises, the kind of quiet that feels like coming home.

some days are too heavy to carry alone... until someone sits beside you. wonbin didn't fix minseo's day, he just stayed. and somehow, that was enough.

ten strangers. one experiment. they're told to act in love, but no one tells them when it stops being fake.

every morning, there's a coffee waiting for hayashi koharu. she never orders it, but it's always exactly what she wants.