O-Negative

The same group of friends, same blood type and same lover.

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.

Drama Romance

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)

Khomsan Nanthajit

(Koe)

Chayaporn Bunnag

(Auan)

Tharawit Chittjai

(Ong-art)

Siranat Ratchusanti

(Mekin)

Chaithat Mettichavalit

(Jeab)

Soisuda Kokpong

(Nian)

Arun Wacharasawat

(Ong-art's Father)

Kumaree Chinnawat

(Ong-art's Mother)

Songsit Rungnopakunsi

(Nid)

Duangkamol Limcharoen

(Editor)

Savitree Puthakaya

(Prim's Aunt)

Vanich Charungkitanan

(Lecturer)

Kerkkrai Unsonthi

(Dean)