Ichinagi Naruka, a Highschool bou, was summoned with his classmates by a hero summoning

Somethin, Something, Cliche start. But Ichinagi is having none of it as he thought if he could go straight towards the Demon Queen while she increase her army numbers

But how? Well soon he discovered this power where he can spawn Modern Weapons from his world. In addition of summoning "ghost soldiers". He lead his modern ghostly army towards the Demon Castle

As he defeated the Demon Queen, he expected to put up a reasonable fight. But she is pathetically weak in front of modern weapons

Soon he took pity, but he then captures her by putting her in a cage that is meant for her

As he returned to the Imperial Capital, where he and his classmates where summoned. He expected to get praised from the people but soon were given a worried look

But he shook it off

As he showed his achievements to the nobles of the Empire. The Emperor himself wanted to meet him in person ALONE

Yup! This is his new life full of "adventures". It ain't slow life, it ain't nothing. Just an ordinary person who got roped into this mess