Kuroitsu Tohka is a research assistant at the Monster Develoment Department of the evil organization Agastia. However, the enemies she must fight at present are not heroes. "Problems just before a presentati...

During the period when Japan was transitioning from the Meiji era into the Taisho era, there was a strange medicine seller. This man called Kouen is a lazy and messy person but as a medicine seller, he is o...