O-Negative

A group of five teenagers of the same blood-type 'O' become friends at art college. Prim has a crush on bad boy Art, while her friend Foon likes quiet Puen. The five form a band and survive freshman initiation rituals, but conflict erupts when romances break up the group's harmony.

Cast

Tata Young

Prim

Manaswee Krittanookul

Foon

Ray MacDonald

Art

Shahkrit Yamnarm

Puen

Sriphan Chunechomboon

Chomphu

Penpak Sirikul

Prim's Mother

Thamapat Seengamrat

Foon's Father

Thorung Jarungkijanan

Foon's Mother

Praphot Mayura

Puen's Father

Duangdao Jarujinda

Puen's Mother