Ryūta Kawabata

Deep-sea archeologist Hiroshi Ibuki is the member of the digging team working at the bottom of the sea hoping to uncover the origins of Earth's existence but instead uncovers a mysterious colony of bacteria which gives off light similar to the Aurora Borealis. The ancient bacteria, once revived, attempt to make the world habitable for themselves - a process that would bring Earth back to its early primal form, killing all current life in the process.

Aoki, a naive, gullible young girl, strays towards the party life instead of taking her school work seriously.

Katagiri Teppei est un agent créatif prometteur, mais dont l'attitude le fait muter au service commercial. Il doit apprendre à s'adapter au nouvel environnement de travail, notamment en coupant ses précieuses mèches de cheveux pour créer une image plus nette et plus appropriée. Uesugi va devenir sa collègue de travail et plus encore.