Nagisa Natsunagi Still Wants to Be a High School Girl novel volume 2 was written by Syusui Tsukimi with art by Hanekoto, and is a spinoff of The Detective is Already Dead.

Nagisa Natsunagi was enjoying her daily routine with her two best friends, finally living out her dream of being a normal high school girl-at least, until she finally found the detective she was looking for. The summer afterward was full of adventures and new encounters, but now that she's back at school with her friends, will she be able to find that normal life again?