Asano Atsuko. The Sixth Zone (№ 204576)

Nezumi sighed.
He twitched, realizing this.
He hated to breathe. It's one thing to breathe on purpose, but sighs, been uttered from his lips unconsciously, irritated him.
"Never spare me the weary sigh for real. Don't cry. Otherwise you will be captured by the demons. Sighs make you open and vulnerable. If you want to survive, keep your mouth shut. Don't let anyone see your weaknesses. Let no one warms your heart. Don't trust anyone but yourself".