diff --git a/frontend/src/utils/IchimokuCloudPlugin.ts b/frontend/src/utils/IchimokuCloudPlugin.ts
index 8ee0fcc..09d26bb 100644
--- a/frontend/src/utils/IchimokuCloudPlugin.ts
+++ b/frontend/src/utils/IchimokuCloudPlugin.ts
@@ -66,7 +66,11 @@ class CloudRenderer implements IPrimitivePaneRenderer {
 
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   draw(target: any): void {
-    if (this._data.length < 2) return;
+    if (this._data.length < 2) {
+      console.log('[IchimokuCloud] draw: skipped, data.length=', this._data.length);
+      return;
+    }
+    console.log('[IchimokuCloud] draw called. data.length:', this._data.length, 'bullish:', this._bullishVisible, 'bearish:', this._bearishVisible);
     const timeScale = this._chart.timeScale();
 
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -141,14 +145,17 @@ export class IchimokuCloudPlugin implements ISeriesPrimitive<Time> {
     this._chart    = chart;
     this._series   = series;
     this._updateFn = requestUpdate;
+    console.log('[IchimokuCloud] attached. series:', !!series, 'chart:', !!chart);
   }
 
   detached(): void {
+    console.log('[IchimokuCloud] detached. data.length:', this._data.length);
     this._chart  = null;
     this._series = null;
   }
 
   setCloudData(data: IchimokuCloudPoint[]): void {
+    console.log('[IchimokuCloud] setCloudData:', data.length, 'points, chart:', !!this._chart, 'series:', !!this._series, 'updateFn:', !!this._updateFn);
     this._data = data;
     this._updateFn?.();
   }
@@ -171,7 +178,10 @@ export class IchimokuCloudPlugin implements ISeriesPrimitive<Time> {
   getBearishVisible() { return this._bearishVisible; }
 
   paneViews(): readonly IPrimitivePaneView[] {
-    if (!this._chart || !this._series) return [];
+    if (!this._chart || !this._series) {
+      console.warn('[IchimokuCloud] paneViews: chart or series is null → returning []');
+      return [];
+    }
     return [new CloudPaneView(this)];
   }