Diary of the Murdered Girl

Tomozuki Hashimoto,a first-year highschool student in an all-girls school was volunteered himself,together with Suzuki Ayumi(the class president)to find out the murderer behind their classmate's death,Aina Chinatsu. Notice:The cover is not mine.I will give the full credits to the right creator/artist.If they wish to take ot down I will gladly do that.