Naofumi Iwatani got transported to another world where he is hated and despised by most people just because he became "the shield hero". His parents, however, want to find their son again and start looking for him. Little did he know that his parents Kazuma and Megumin would do exactly that and join his party. This story will explore the adventures they have together. Dark humor.

Kazuma was fiddling around with an item in Wiz's shop before he was suddenly transported to another world. The first person he meets here is also new to this world and also from Japan, his name Subaru Natsuki. Subaru will suffer, but since Kazuma is around he is going to get some pointers on what not to do in another world, but Kazuma won't give out tips when Subaru wants them.

This is a story that takes place after Kazuma's party has successfully defeated the demon king. They just forgot about the last demon king general, the demon king's daughter. Kazuma will have to do actions he never thought he would ever do to protect Megumin. Prologue to "The Iwatani Family."