4 Elements / The family
Din, Nam, Lom and Fai are the four Wathinwanit cousins at the center of the anthology. Each one carries an element in her nickname, each one gets her own series, and all four keep turning up in each other's stories. Here is how the house fits together.
The Thai title of the anthology, บ้านวาทินวณิช (Baan Wathinwanit), means the Wathinwanit house. That house is the thread running through all four series.
The four leads are cousins rather than sisters, a detail the novels are specific about: their fathers are brothers, which is why they share a surname, a family home and a great deal of history without having grown up under the same roof.
Each cousin is known by a nickname that names an element — Din is earth, Nam is water, Lom is air, Fai is fire — and each of the four novels by Salmon, and each of the four series adapted from them, belongs to one of them. The result is four self-contained love stories that share a world, so a viewer can start anywhere and still pick up the family along the way.
Every rating, air date and chart placement for all four series is tracked on the 4 Elements ratings hub at FreenBecky Media, our sister site, alongside the anthology's global impact record.
Four brothers in the older generation, four daughters in the younger one. Read across: element, cousin, the actress who plays her, and the partner she ends up with.
Earth · ดิน
กษมา วาทินวณิช
Played by Apple Lapisara. The steady one, and the cousin the anthology opens with — she takes charge of the family land and holds the house together.
With Rose (Thippapa Amornjinda)Played by Mim Panthita
Open The EarthWater · น้ำ
อาโป วาทินวณิช
Played by Engfa Waraha. The cousin running the family's hotel business, and the target of an undercover operation that does not go the way anyone planned.
With Chonlada "Lada" KunanonPlayed by Charlotte Austin
Open The WaterAir · ลม
วาโย วาทินวณิช
Played by Freen Sarocha. A police lieutenant, and the one fans describe as the flirt — until a protection detail puts a visiting princess in her charge.
With Princess Catherine Blew de LainaPlayed by Becky Armstrong
Open The AirFire · ไฟ
อัจฉิมา วาทินวณิช
Played by Namneung Milin. The heiress of the Akanee Group, the one who acts first and thinks later, and the cousin whose story closes the house out.
With Athittaya "Kaphrao"Played by Noey Kanteera
Open The FireThe surname is transcribed two ways across sources — Wathinwanit and Watinwanich — for the same Thai name, วาทินวณิช. This site uses Wathinwanit, the spelling in the official cast lists; the Thai title of the anthology, บ้านวาทินวณิช, is romanized "Baan Watinwanich".
One cousin, one partner, one series each. The pairings are known to fans by their own ship names.
The four series are standalone, but the cousins are not. They appear in each other's episodes, turn up at family occasions, and carry running jokes across the anthology — which is why watching in order pays off even though you don't have to.
Engfa is credited in the first series as well as leading the second, so Nam is on screen before The Water begins. Fan accounts place other cousins in The Earth too, and we're confirming those episode by episode.
Engfa Waraha is the only lead credited in every installment — Nam leads The Water and turns up in The Earth, The Air and The Fire, making her the thread that runs the length of the anthology.
Nam and Fai both appear in the third series, as does Lada from The Water, alongside Police General Wathit Wathinwanit, the most senior Wathinwanit on screen — the largest gathering of the house in the anthology.
Lada carries from The Water into The Air, and Farin "Fah" Carver appears in both The Water and The Air, so the connections aren't limited to the cousins — which is why fans track the cousins-in-law as a group of their own.
All four couples appeared together at 4Elements: The Grand Unveiling on 11 January 2026, two weeks before the first episode aired.
We are building a full episode-by-episode crossover list with help from fans of all four pairings — send a scene we've missed to @FBMediaSite on X.
Broadcast order is the order to watch in. Each series stands on its own, so you can start with the couple you came for — but the cousins are introduced in sequence, and the crossovers land better if you meet them in the order the show did.
Din and Rose. Opens the house and introduces the other three cousins.
Nam and Chollada. Moves the story inside the family business.
Lom and Princess Blew. The action entry, and the one with the most family on screen.
Fai and Kaphrao. Closes out the Wathinwanit house.
The four nicknames are the Thai words for the classical elements, which is why the family reads as a set the moment you hear the names.
Each cousin also has a formal given name used on screen, while family and friends use the element nickname — ordinary Thai practice, and the reason two names float around for every character.
Supporting family members, the older generation, character relationships and the crossover scenes are still being filled in. If you follow any of the four couples and know the details, they belong here — and contributors are credited.
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