The cursed sword I bought online turned out to be the real deal! When I tried to cut it, space split open and I was transported to another world, and then I was mistaken for a legendary hero, and now I'm in trouble!

通販で買った妖刀がガチだった〜試し斬りしたら空間が裂けて異世界に飛ばされた挙句、伝説の勇者だと勘違いされて困っています〜