diff --git a/Mastodon/Scene/Report/Report/ReportViewController.swift b/Mastodon/Scene/Report/Report/ReportViewController.swift
index 6d3f6da0..1fa8428e 100644
--- a/Mastodon/Scene/Report/Report/ReportViewController.swift
+++ b/Mastodon/Scene/Report/Report/ReportViewController.swift
@@ -24,6 +24,12 @@ class ReportViewController: UIViewController, NeedsDependency, ReportViewControl
     
     var viewModel: ReportViewModel!
     
+    lazy var cancelBarButtonItem = UIBarButtonItem(
+        barButtonSystemItem: .cancel,
+        target: self,
+        action: #selector(ReportViewController.cancelBarButtonItemDidPressed(_:))
+    )
+    
     deinit {
         os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
     }
@@ -38,6 +44,8 @@ extension ReportViewController {
         setupAppearance()
         defer { setupNavigationBarBackgroundView() }
         
+        navigationItem.rightBarButtonItem = cancelBarButtonItem
+
         viewModel.reportReasonViewModel.delegate = self
         viewModel.reportServerRulesViewModel.delegate = self
         viewModel.reportStatusViewModel.delegate = self
@@ -62,6 +70,14 @@ extension ReportViewController {
     
 }
 
+extension ReportViewController {
+    
+    @objc private func cancelBarButtonItemDidPressed(_ sender: UIBarButtonItem) {
+        dismiss(animated: true, completion: nil)
+    }
+    
+}
+
 // MARK: - UIAdaptivePresentationControllerDelegate
 extension ReportViewController: UIAdaptivePresentationControllerDelegate {
     func presentationControllerShouldDismiss(_ presentationController: UIPresentationController) -> Bool {
@@ -74,14 +90,21 @@ extension ReportViewController: ReportReasonViewControllerDelegate {
     func reportReasonViewController(_ viewController: ReportReasonViewController, nextButtonPressed button: UIButton) {
         guard let reason = viewController.viewModel.selectReason else { return }
         switch reason {
+        case .dislike:
+            // TODO:
+            break
         case .violateRule:
             coordinator.present(
                 scene: .reportServerRules(viewModel: viewModel.reportServerRulesViewModel),
                 from: self,
                 transition: .show
             )
-        default:
-            break
+        case .spam, .other:
+            coordinator.present(
+                scene: .reportStatus(viewModel: viewModel.reportStatusViewModel),
+                from: self,
+                transition: .show
+            )
         }
     }
 }
@@ -90,7 +113,7 @@ extension ReportViewController: ReportReasonViewControllerDelegate {
 extension ReportViewController: ReportServerRulesViewControllerDelegate {
     func reportServerRulesViewController(_ viewController: ReportServerRulesViewController, nextButtonPressed button: UIButton) {
         if viewController.viewModel.isDislike {
-            
+            // TODO:
         } else if viewController.viewModel.selectRule != nil {
             coordinator.present(
                 scene: .reportStatus(viewModel: viewModel.reportStatusViewModel),
diff --git a/Mastodon/Scene/Report/Report/ReportViewModel.swift b/Mastodon/Scene/Report/Report/ReportViewModel.swift
index 73bac19b..590aed87 100644
--- a/Mastodon/Scene/Report/Report/ReportViewModel.swift
+++ b/Mastodon/Scene/Report/Report/ReportViewModel.swift
@@ -104,6 +104,9 @@ extension ReportViewModel {
         let managedObjectContext = context.managedObjectContext
         let _query: Mastodon.API.Reports.FileReportQuery? = try await managedObjectContext.perform {
             guard let user = self.user.object(in: managedObjectContext) else { return nil }
+            
+            // the status picker is essential step in report flow
+            // only check isSkip or not
             let statusIDs: [Status.ID]? = {
                 if self.reportStatusViewModel.isSkip {
                     let _id: Status.ID? = self.reportStatusViewModel.status.flatMap { record -> Status.ID? in
@@ -118,10 +121,15 @@ extension ReportViewModel {
                     }
                 }
             }()
+            
+            // the user comment is essential step in report flow
+            // only check isSkip or not
             let comment: String? = {
                 var suffixes: [String] = []
                 let content: String?
                 
+                // the server rules is NOT essential step in report flow
+                // append suffix depends which reason
                 if let reason = self.reportReasonViewModel.selectReason {
                     switch reason {
                     case .spam:
@@ -130,9 +138,12 @@ extension ReportViewModel {
                         suffixes.append(reason.rawValue)
                         if let rule = self.reportServerRulesViewModel.selectRule {
                             suffixes.append(rule.text)
+                        } else {
+                            assertionFailure("should select valid rule")
                         }
-                        
-                    case .dislike, .other:
+                    case .dislike:
+                        assertionFailure("should not enter the report flow")
+                    case .other:
                         break
                     }
                 }
@@ -162,11 +173,14 @@ extension ReportViewModel {
 
         do {
             isReporting = true
+            #if DEBUG
             try await Task.sleep(nanoseconds: .second * 3)
-//            let _ = try await context.apiService.report(
-//                query: query,
-//                authenticationBox: authenticationBox
-//            )
+            #else
+            let _ = try await context.apiService.report(
+                query: query,
+                authenticationBox: authenticationBox
+            )
+            #endif
             isReportSuccess = true
         } catch {
             isReporting = false
diff --git a/Mastodon/Scene/Report/ReportReason/ReportReasonViewController.swift b/Mastodon/Scene/Report/ReportReason/ReportReasonViewController.swift
index b0651e42..ac5d9e79 100644
--- a/Mastodon/Scene/Report/ReportReason/ReportReasonViewController.swift
+++ b/Mastodon/Scene/Report/ReportReason/ReportReasonViewController.swift
@@ -30,12 +30,6 @@ final class ReportReasonViewController: UIViewController, NeedsDependency, Repor
     var viewModel: ReportReasonViewModel!
     private(set) lazy var reportReasonView = ReportReasonView(viewModel: viewModel)
     
-    lazy var cancelBarButtonItem = UIBarButtonItem(
-        barButtonSystemItem: .cancel,
-        target: self,
-        action: #selector(ReportReasonViewController.cancelBarButtonItemDidPressed(_:))
-    )
-    
     let navigationActionView: NavigationActionView = {
         let navigationActionView = NavigationActionView()
         navigationActionView.backgroundColor = Asset.Scene.Onboarding.background.color
@@ -57,8 +51,6 @@ extension ReportReasonViewController {
         setupAppearance()
         defer { setupNavigationBarBackgroundView() }
         
-        navigationItem.rightBarButtonItem = cancelBarButtonItem
-        
         let hostingViewController = UIHostingController(rootView: reportReasonView)
         hostingViewController.view.preservesSuperviewLayoutMargins = true
         addChild(hostingViewController)
@@ -102,10 +94,6 @@ extension ReportReasonViewController {
 
 extension ReportReasonViewController {
     
-    @objc private func cancelBarButtonItemDidPressed(_ sender: UIBarButtonItem) {
-        dismiss(animated: true, completion: nil)
-    }
-    
     @objc private func nextButtonPressed(_ sender: UIButton) {
         logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public)")
         
diff --git a/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewController.swift b/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewController.swift
index 10191f6e..fd778317 100644
--- a/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewController.swift
+++ b/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewController.swift
@@ -84,6 +84,8 @@ extension ReportSupplementaryViewController {
             .sink { [weak self] isBusy in
                 guard let self = self else { return }
                 self.navigationItem.rightBarButtonItem = isBusy ? self.activityIndicatorBarButtonItem : self.cancelBarButtonItem
+                self.navigationItem.hidesBackButton = isBusy
+                self.navigationActionView.backButton.isUserInteractionEnabled = !isBusy
             }
             .store(in: &disposeBag)
 
diff --git a/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewModel.swift b/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewModel.swift
index 4147d07d..c07ee1f5 100644
--- a/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewModel.swift
+++ b/Mastodon/Scene/Report/ReportSupplementary/ReportSupplementaryViewModel.swift
@@ -34,11 +34,15 @@ class ReportSupplementaryViewModel {
         self.user = user
         // end init
         
-        commentContext.$comment
-            .map { comment -> Bool in
-                return !comment.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
-            }
-            .assign(to: &$isNextButtonEnabled)
+        Publishers.CombineLatest(
+            commentContext.$comment,
+            $isBusy
+        )
+        .map { comment, isBusy -> Bool in
+            guard !isBusy else { return false }
+            return !comment.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
+        }
+        .assign(to: &$isNextButtonEnabled)
     }
     
 }