From Yen Press:
I, Kimihiko Kimizuka, was an ordinary high school student. Sure, I had a penchant for getting dragged into all sorts of trouble but was otherwise ordinary until I met her. The detective, Siesta. Her angelically beautiful face and cool disposition in the face of plane hijackers swept me off my feet and the next thing I knew, I’d spent the next three years off on a whirlwind adventure acting as her assistant. After all, I was the Watson to her Sherlock. But then she died. It didn’t end there, though. No, our story only really began a year later when I met a bratty, snotty high school girl who seemed oddly familiar
6 Volumes (Complete)