A giant monster called an "arch dissolver" attacks Tokyo, but all the pilots are on leave! The two in closest proximity are Hikari and Kyosuke, who are busy porking their brains out and taking baths together. Meanwhile a pilot wonders how the monster knew when to attack. .... Is there a spy among them?

We've gotten used to seeing high-quality hentai titles that are as good or better than mainstream anime, so something like Dyogrammaton feels a little dated. The character design is poor and overly cartoony, and the CG is bad and feels out of place. While the plot might appeal to fans of Robotech and Evangelion, everything else probably won't.

Retailing: Horny fans of anime such as Gunbusters and Evangelion.