Fantastic investigations

This manga is classified as shonen because the main character is a boy but I think it rather seduce girls. The hero is back in his high school and abroad, he is accused of murder and does not remember anything. A mysterious girl with doll tunes lurking at the top of the library to help prove his innocence. You soon realize that the duo will conduct investigations in the school where he goes decidedly full of mysterious things (ghosts, curses, fairies) without sparing morbid details, somewhat in the spirit of the series Kaori Yuki. Translation is sometimes inadequate but the atmosphere 19 ° is very successful and the volume is read in one sitting. I look forward to reading the second!