A hero summoned through sacrifice into a world of demons and war. This hero through years of hardship and training seeks his one wish to return to his homeland before his death.

With this goal, the hero subjugates the demons and elves who conspire against the empire and it's people. With the end near, the hero learns a way to return to his world using the demon queens heart as a catalyst.

At the end of war, the hero request aid from the empire but instead of helping him in his request as repayment, they attempt kill him due to the possible danger he posses in his strength.

During his turmoil, the heroes comrades of which he gained during the years hardship of battle aid him in defeating the demon queen as their own way of repaying him for his sacrifices. At the end of this battle, the heroes comrades are defeated and only the hero remains clenching the heart of the demon queen in with his remaining arm.

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Before the hero leaves, he convinces the empire and other countries to no longer rely on the hero summoning to prevent any more tragedy and to rely on their own strengths.

With his purpose completed, he cast the summoning magic breaching the dimensions barrier and crossing the world to his homeland.

Missing for 7 long years, his parents faces he finds difficult to remember and his younger sister who has grown up to a high schooler have their fair share of troubles and experiences with the return of the former hero who starts up his own shop selling magic items.

This is the story of Haruto and his daily life selling magical gadgets and making new memories while slowly getting accustomed to his world.