I haven't been able to read the light novels for this series (can be found on their actual light novel website@
http://www.sneakerbunko.jp/series/mondaiji/index.php) but the animation and plot was simple yet entertaining. 3 problem children from another world of different dimensions being summoned to a place by someone, arguably similar scenario from other cross-dimensional related anime. Although I cannot offer spoilers for this, I'd say this series is more like an introduction to the light novel series since some otakus cannot fathom the trouble of reading words without pictures. 10 episodes of this series is not quite enough for fans but enough for humor and laughter, try watching it and post your reviews here please?