Symbols Left Behind

Two classmates find ancient runes written on a classroom blackboard. When they copy the symbols, they accidentally activate a game that forces students to sacrifice secrets in exchange for survival.

The Game That Activates

Tatsuya and Mika are the last students in classroom 2-A when they notice symbols glowing faintly on the blackboard — runes from a long-extinct civilization that once inhabited the area. When Tatsuya copies them onto his notebook as a joke, the classroom darkens and a disembodied voice announces the start of the 'Rune Game.' Now every student who steps into 2-A is marked with a rune on their wrist, and each mark represents a secret that the game has extracted from them. Participants must compete against each other in daily challenges broadcast through the school's PA system, with losers having their deepest secrets publicly revealed — and three revelations mean elimination, which the students quickly learn means vanishing entirely from existence.

Secrets for Survival

Tatsuya discovers that the civilization that created the runes was wiped out by this very game when their society became too dishonest. The game isn't just punishing secrets — it's testing whether humanity is fundamentally trustworthy. Tatsuya and Mika must find the original rune-master's tomb beneath the school and deactivate the game before their classmates turn on each other. But the game is clever: it rewards betrayal, and several students have already decided that winning is better than working together. With Mika's most dangerous secret — that she witnessed a crime and lied to protect the culprit — being the next target for revelation, the stakes become personal in a way neither of them expected.

Write at Your Own Risk

This series is a razor-sharp psychological thriller disguised as a supernatural game story. The secrets that get revealed range from the mundane to the genuinely shocking, and the way different students react to being exposed creates a pressure-cooker atmosphere that never lets up. The rune system is elegantly designed, with clear rules that are easy to follow but allow for creative strategies. Tatsuya and Mika's dynamic — the impulsive jokester and the guarded secret-keeper — evolves beautifully as their shared trauma forces them to trust each other. Great for fans of Battle Royale-lite tension without the gore.

Key Details

  • Category: School Supernatural
  • Rating: 4.4/5
  • Status: Ongoing
  • Chapters: 34
  • Tags: Runes, Game, Psychological, Secrets, Thriller, School

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