Sekai-ichi Hatsukoi

Sekai Ichi Hatsukoi - The World's Greatest First Love

Goen

Sekaiichi Hatsukoi. La storia di Ritsu Onodera (Vol. 3)

The Case of Takafumi Yokozawa                    

Crunchyroll

Sekai Ichi Hatsukoi - World's Greatest First Love: Seasons One and Two

Tōkyō : Kadokawa Shoten, 2008.

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] Vol.1

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] Vol.6

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] Vol.3

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] Vol.2

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] VOL. 8

Sekai Ichi Hatsukoi - Onodera Ritsu No Baai [In Japanese] [Japanese Edition] Vol.7