Kami-sama no Memo-chou

Heaven's Memo Pad (神様のメモ帳, Kami-sama no Memo-chō, lit. "God's Memo Pad") is a Japanese light novel series written by Hikaru Sugii, with illustrations by Mel Kishida. The first volume was published in January 2007, and as of July 2011, seven volumes have been released by ASCII Media Works under their Dengeki Bunko imprint. A manga adaptation illustrated by Tiv started serialization in the August 2010 issue of ASCII Media Works' Dengeki Daioh magazine. An anime adaptation began airing in Japan in July 2011.

Story
Narumi Fujishima is an ordinary high school boy who remains isolated from his fellow classmates. One afternoon fellow classmate Ayaka Shinozaki invites Narumi to join the gardening club and introduces him to a reclusive detective named Alice. Alice hires Narumi as an assistant and puts him to work solving the strange mysteries of Angel fix, an illegal drug. Little does he know it could put him and Ayaka in serious trouble.