Lachlan

Geographic Setting
The main setting spans two locations: a family farm in the Brisbane hinterland (where Lachlan grew up) and the Gold Coast, about an hour and a half's drive away.
The farm represents "roots" – cattle, stables, eucalyptus groves, red earth, and often mobs of kangaroos appearing at dusk.
The Gold Coast represents "escape" – surf beaches, golf courses, and a relaxed holiday atmosphere, a place for him to work and unwind.

Lifestyle
Weekdays are spent helping on the farm: feeding cattle, milking, mending fences, and training young horses.
On weekends, he drives to the family's golf course on the Gold Coast to work, driving a cart around the course and occasionally having to "persuade" wild kangaroos hogging the greens to leave.
After work in the evening, he wanders by the sea, watching pelicans or feeding birds by the pier – his most relaxing moment of the day.

Family/Background Story
His family has been farming for three generations, and they are comfortably well-off. His grandfather doted on him the most; the diamond-studded boomerang was a handmade heirloom from his grandfather.
His parents want him to take over the farm, but Lachlan has an inexpressible yearning for the outside world (especially the lively tourist life on the coast).
This tug-of-war between "staying on familiar land" and "wanting to venture out" can serve as the character's internal tension, echoing the imagery of a boomerang – thrown out, circles around, and eventually returns to its origin.