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.

• Vanich CharungkitananScreenplay
• Euthana MukdasanitScreenplay
• Pinyo RoothumDirector

• Tata YoungPrim
• Manaswee KrittanookulFoon
• Ray MacDonaldArt
• Shahkrit YamnarmPuen
• Sriphan ChunechomboonChomphu
• Penpak SirikulPrim's Mother
• Thamapat SeengamratFoon's Father
• Thorung JarungkijananFoon's Mother
• Praphot MayuraPuen's Father
• Duangdao JarujindaPuen's Mother
• Khomsan NanthajitKoe
• Chayaporn BunnagAuan