Bakemono Goroshi no Psycho Lily

Aya Orizuki is a high school girl who prefers to act first and think later. After Aya saves her classmate Yui Houga from being kidnapped in a back alley, strange things start to happen to her. Aya feels like something is wrong, and there is an even more dangerous secret hidden behind the scenes...

(Source: Ura Sunday, translated)