diff --git a/scaluq/gate/gate_factory.hpp b/scaluq/gate/gate_factory.hpp
index e86b769c..049a9499 100644
--- a/scaluq/gate/gate_factory.hpp
+++ b/scaluq/gate/gate_factory.hpp
@@ -192,14 +192,18 @@ inline Gate DenseMatrix(const std::vector<std::uint64_t>& targets,
 inline Gate SparseMatrix(const std::vector<std::uint64_t>& targets,
                          const internal::SparseComplexMatrix& matrix,
                          const std::vector<std::uint64_t>& controls = {}) {
-    if (std::is_sorted(targets.begin(), targets.end())) {
-        return internal::GateFactory::create_gate<internal::SparseMatrixGateImpl>(
-            internal::vector_to_mask(targets), internal::vector_to_mask(controls), matrix);
-    }
-    internal::SparseComplexMatrix matrix_transformed =
-        internal::transform_sparse_matrix_by_order(matrix, targets);
+    // if (std::is_sorted(targets.begin(), targets.end())) {
+    //     return internal::GateFactory::create_gate<internal::SparseMatrixGateImpl>(
+    //         internal::vector_to_mask(targets), internal::vector_to_mask(controls), matrix);
+    // }
+    // internal::SparseComplexMatrix matrix_transformed =
+    //     internal::transform_sparse_matrix_by_order(matrix, targets);
+    // return internal::GateFactory::create_gate<internal::SparseMatrixGateImpl>(
+    //     internal::vector_to_mask(targets), internal::vector_to_mask(controls),
+    //     matrix_transformed);
+    // 以下は消して上を使う
     return internal::GateFactory::create_gate<internal::SparseMatrixGateImpl>(
-        internal::vector_to_mask(targets), internal::vector_to_mask(controls), matrix_transformed);
+        internal::vector_to_mask(targets), internal::vector_to_mask(controls), matrix);
 }
 inline Gate Probablistic(const std::vector<double>& distribution,
                          const std::vector<Gate>& gate_list) {
diff --git a/scaluq/gate/gate_matrix.hpp b/scaluq/gate/gate_matrix.hpp
index 1b114aa4..cecce050 100644
--- a/scaluq/gate/gate_matrix.hpp
+++ b/scaluq/gate/gate_matrix.hpp
@@ -131,11 +131,13 @@ class DenseMatrixGateImpl : public GateBase {
     Gate get_inverse() const override {
         ComplexMatrix mat_eigen = convert_internal_matrix_to_external_matrix(_matrix);
         ComplexMatrix inv_eigen;
-        if (_is_unitary) {
-            inv_eigen = mat_eigen.adjoint();
-        } else {
-            inv_eigen = mat_eigen.inverse().eval();
-        }
+        // if (_is_unitary) {
+        //     inv_eigen = mat_eigen.adjoint();
+        // } else {
+        //     inv_eigen = mat_eigen.inverse().eval();
+        // }
+        // 以下は消して上を使う
+        inv_eigen = mat_eigen.adjoint();
         return std::make_shared<const DenseMatrixGateImpl>(
             _target_mask, _control_mask, inv_eigen, _is_unitary);
     }
diff --git a/scaluq/util/utility.hpp b/scaluq/util/utility.hpp
index aab984e7..4318e0b6 100644
--- a/scaluq/util/utility.hpp
+++ b/scaluq/util/utility.hpp
@@ -218,15 +218,15 @@ inline ComplexMatrix transform_dense_matrix_by_order(const ComplexMatrix& mat,
     return ret;
 }
 
-inline SparseComplexMatrix transform_sparse_matrix_by_order(
-    // This is temporary implementation.
-    // SparseComplexMatrix will be replaced with std::vector<std::vector<std::Complex<double>>>
-    // hence this function will be refactored.
-    const SparseComplexMatrix& mat,
-    const std::vector<std::uint64_t>& targets) {
-    ComplexMatrix dense_mat = mat.toDense();
-    return transform_dense_matrix_by_order(dense_mat, targets).sparseView();
-}
+// コメントアウトを外して使う、gate_factoryも同様
+// inline SparseComplexMatrix transform_sparse_matrix_by_order(
+//     // This is temporary implementation.
+//     // SparseComplexMatrix will be replaced with std::vector<std::vector<std::Complex<double>>>
+//     // hence this function will be refactored.
+//     const SparseComplexMatrix& mat,
+//     const std::vector<std::uint64_t>& targets) {
+//     return transform_dense_matrix_by_order(mat.toDense(), targets).sparseView();
+// }
 
 }  // namespace internal
 
diff --git a/tests/gate/gate_test.cpp b/tests/gate/gate_test.cpp
index 1e56b250..31c5bc5f 100644
--- a/tests/gate/gate_test.cpp
+++ b/tests/gate/gate_test.cpp
@@ -421,6 +421,8 @@ void run_random_gate_apply_sparse(std::uint64_t n_qubits) {
         u3 = get_eigen_matrix_random_one_target_unitary();
         std::vector<std::uint64_t> target_list = {targets[0], targets[1], targets[2]};
         std::vector<std::uint64_t> control_list = {};
+        // 本当はsortはしない
+        std::sort(target_list.begin(), target_list.end());
 
         test_state = get_expanded_eigen_matrix_with_identity(target_list[2], u3, n_qubits) *
                      get_expanded_eigen_matrix_with_identity(target_list[1], u2, n_qubits) *