I'm a Kindergarten Teacher, It's Only Natural That My Students Are S-Class Weirdos

Kindergarten teacher Zhou Haiyun is framed and sent to Restricted Zone No. 9! Just when he thinks he's doomed, he activates the strongest kindergarten principal system. As long as he accepts and trains students, he can upgrade the kindergarten level! But he discovers that the system's perception differs from his own. "Wait, you call the S-class weirdo Bloody Nursery Rhyme, who slaughtered an entire city, a sunny and cute little girl?" "And this S-class weirdo Devourer, who eats hundreds of people in one bite, is a greedy little boy?" However, with the system's halo, these terrifying S-class weirdos are severely disciplined by Zhou Haiyun as if they were elementary school students. — Description from novelcodex.org