Chapter 12 — The Formula for Treachery
Suguru Teshigawara, the math teacher, has his heart set only on Azusa Fuyutsuki; however, Eikichi inadvertently incurs Suguru's wrath when he ruins Suguru's plans to win Azusa over. (Source: Wikipedia)
Other chapters
- Chapter 1: GTO-The Legend Begins
- Chapter 2: Enter Uchiyamada!
- Chapter 3: Late Night Roof Diving
- Chapter 4: The Secret Life of Onizuka
- Chapter 5: An Eye for an Eye, a Butt for a Butt
- Chapter 6: Conspiracies All Around
- Chapter 7: The Mother of all Crushes
- Chapter 8: Bungee Jumping Made Easy
- Chapter 9: Onizuka and the Art of War
- Chapter 10: Outside Looking In
- Chapter 11: To Be Idolized by a Nation
- Chapter 12: The Formula for Treachery
- Chapter 13: Only the Best Will Do
- Chapter 14: Between a Rock and a Hard Place
- Chapter 15: The Great Sacrifice
- Chapter 16: Beauty + Brains = A Dangerous Mix
- Chapter 17: Falling for The Great Onizuka
- Chapter 18: How to Dine and Dash
- Chapter 19: Private Investigations
- Chapter 20: Love Letters
- Chapter 21: Revolution Everywhere
- Chapter 22: The Art of Demolition
- Chapter 23: Superstition
- Chapter 24: Compromising Positions
- Chapter 25: Playing Doctor - GTO Style
- Chapter 26: Onizuka Meets His Match
- Chapter 27: GTO - Agent to the Stars
- Chapter 28: Whatever Can Go Wrong, Will Go Wrong
- Chapter 29: Studies in High Finance
- Chapter 30: Money Talks, GTO Walks
- Chapter 31: Destination: Okinawa
- Chapter 32: The Law of Probability
- Chapter 33: Search and Rescue
- Chapter 34: Good Cop/Bad Cop
- Chapter 35: Wedding Bell Blues
- Chapter 36: Self-Improvement
- Chapter 37: Living Together
- Chapter 38: Great Treasure Okinawa
- Chapter 39: Alone in the Dark
- Chapter 40: Matters of the Heart
- Chapter 41: Confessions
- Chapter 42: Old Wounds Revisited
- Chapter 43: Onizuka's Final Battle