Tsunokei Joshi wa Kokurenai

In a world where some individuals have horns and others do not, Tsunoko Yagisawa is a university student entering her third year. She develops feelings for a classmate named Hanasaka-kun. Her affection for him leads her to question the authenticity of her emotions. Both Tsunoko and Hanasaka-kun struggle with delusions that prevent them from expressing their feelings, though the exact reason remains unclear.