"I want to be her hero." Shiranui Natsume, a third-year high school student. His lover is his childhood friend, Minazuki Natsume. Whenever he’s in a pinch, she rushes to his side. Whenever he loses his way, she shows him the path. He wants to catch up to her—his girlfriend, who is always dignified, cool, and just like a hero. This is the story of "Natsume and Natsume," and the journey of how Shiranui Natsume becomes a true hero for Minazuki Natsume.

An anthology of 20 short stories with the theme "15 cm between you and me" written by 20 different authors.

A complementary manga following the perspective of Yukina Kou. *Note: The chapters are later individually compiled into the volume releases of Sekaiichi Hatsukoi .*

An anthology by various authors and artists.

First official Touhou book released on August 11th, 2005. The collection includes 9 comics.