Calpis Water offered 5000 copies as prizes in a lottery during a campaign in association with Toro (it's the cat's name).
- a Pocket Station ;
- a strap ;
- a mini figure of Toro that can produce blue light (it can be linked to the strap or used as a keychain) ;
- a promotional demo of Doko Demo Isshou with Calpis Water contents.
Some TV spots during the campaign with Toro. The hibaihin appears around the 30th second.
Additional TV ADs, for the Pocket Station