diff --git a/frontend/src/utils/ChartManager.ts b/frontend/src/utils/ChartManager.ts
index 3f0f7ad..05c69ea 100644
--- a/frontend/src/utils/ChartManager.ts
+++ b/frontend/src/utils/ChartManager.ts
@@ -844,14 +844,59 @@ export class ChartManager {
     return this._plotOrderForEntry(entry).map(plotId => {
       const idx = entry.seriesMeta.findIndex(m => m.plotId === plotId);
       if (idx < 0) return NaN;
-      const series = entry.seriesList[idx];
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const d = params.seriesData.get(series) as any;
-      if (!d) return NaN;
-      return typeof d.value === 'number' ? d.value : NaN;
+      return this._seriesValueAtCrosshairTime(entry.seriesList[idx], params);
     });
   }
 
+  /** 전용 priceScale 시리즈는 params.seriesData 에 없을 수 있어 time 기준 fallback 조회 */
+  private _seriesValueAtCrosshairTime(
+    series: ISeriesApi<SeriesType>,
+    params: MouseEventParams<Time>,
+  ): number {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const d = params.seriesData.get(series) as any;
+    if (d != null) {
+      if (typeof d.value === 'number' && Number.isFinite(d.value)) return d.value;
+      if (typeof d.close === 'number' && Number.isFinite(d.close)) return d.close;
+    }
+    if (params.time == null) return NaN;
+    return this._lookupSeriesValueAtTime(series, params.time as number);
+  }
+
+  private _lookupSeriesValueAtTime(
+    series: ISeriesApi<SeriesType>,
+    time: number,
+  ): number {
+    try {
+      const data = series.data() as ReadonlyArray<{ time: Time; value?: number; close?: number }>;
+      if (!data.length) return NaN;
+      for (let i = data.length - 1; i >= 0; i--) {
+        const t = data[i].time as number;
+        if (t <= time) {
+          const v = data[i].value ?? data[i].close;
+          return typeof v === 'number' && Number.isFinite(v) ? v : NaN;
+        }
+      }
+      const v = data[0].value ?? data[0].close;
+      return typeof v === 'number' && Number.isFinite(v) ? v : NaN;
+    } catch {
+      return NaN;
+    }
+  }
+
+  /** 보조지표 전용 sub-pane (볼륨 숨김 시 pane 1 포함) */
+  private _isIndicatorSubPane(paneIndex: number): boolean {
+    return paneIndex >= this._minIndicatorSubPane();
+  }
+
+  private _showSeriesTitleOnChart(paneIndex: number): boolean {
+    return !this._isIndicatorSubPane(paneIndex);
+  }
+
+  private _hlineAxisLabelVisible(): boolean {
+    return this._indicatorAreaPriceLabelsEnabled;
+  }
+
   /** OBV — plot0·plot1 항상 쌍으로 생성 (메인 차트와 동일, DUAL_LINE repair 경로 회피) */
   private _addObvIndicatorSeries(
     seriesList: ISeriesApi<SeriesType>[],
@@ -918,7 +963,7 @@ export class ChartManager {
 
       const isPlotVisible = !indicatorHidden;
       const showPriceLabel = this.shouldShowSeriesPriceLabel(enriched, true, pane);
-      const showSeriesTitle = pane < 2 && showPriceLabel;
+      const showSeriesTitle = this._showSeriesTitleOnChart(pane) && showPriceLabel;
       const regPlot = def?.plots?.find(p => p.id === plotId);
 
       const resolvedColor = resolvePlotLineColor(
@@ -995,13 +1040,14 @@ export class ChartManager {
           ? isCustomPlotSelected(this._getAppliedCustomOverlaySelection(), config.type, plotDef.id)
           : config.plotVisibility?.[plotDef.id] !== false);
       const showPriceLabel = this.shouldShowSeriesPriceLabel(config, true, pane);
-      const showSeriesTitle = pane < 2 && showPriceLabel;
+      const showSeriesTitle = this._showSeriesTitleOnChart(pane) && showPriceLabel;
       const regPlot = def?.plots?.find(p => p.id === plotDef.id);
       const series = this.chart.addSeries(LineSeries, {
         color:            resolvePlotLineColor(plotDef.color, regPlot?.color ?? plotDef.color ?? '#2962FF'),
         lineWidth:        Math.max(1, plotDef.lineWidth ?? regPlot?.lineWidth ?? 1) as 1 | 2 | 3 | 4,
         lineStyle:        plotSeriesLineStyle(plotDef.lineStyle),
         priceLineVisible: false,
+        crosshairMarkerVisible: true,
         lastValueVisible: showPriceLabel,
         title:            showSeriesTitle ? this.seriesTitleForPlot(config, plotDef) : '',
         visible:          isPlotVisible,
@@ -1045,7 +1091,7 @@ export class ChartManager {
           ? isCustomPlotSelected(this._getAppliedCustomOverlaySelection(), config.type, plotDef.id)
           : config.plotVisibility?.[plotDef.id] !== false);
       const showPriceLabel = this.shouldShowSeriesPriceLabel(config, true, pane);
-      const showSeriesTitle = pane < 2 && showPriceLabel;
+      const showSeriesTitle = this._showSeriesTitleOnChart(pane) && showPriceLabel;
       const regPlot = def?.plots?.find(p => p.id === plotDef.id);
       const series = this.chart.addSeries(LineSeries, {
         color:            resolvePlotLineColor(plotDef.color, regPlot?.color ?? plotDef.color ?? '#2962FF'),
@@ -1225,13 +1271,14 @@ export class ChartManager {
                 ? isCustomPlotSelected(this._getAppliedCustomOverlaySelection(), config.type, plotDef.id)
                 : config.plotVisibility?.[plotDef.id] !== false);
             const showPriceLabel = this.shouldShowSeriesPriceLabel(config, true, pane);
-            const showSeriesTitle = pane < 2 && showPriceLabel;
+            const showSeriesTitle = this._showSeriesTitleOnChart(pane) && showPriceLabel;
             const regPlot = def?.plots?.find(p => p.id === plotDef.id);
             series = this.chart.addSeries(LineSeries, {
               color:            resolvePlotLineColor(plotDef.color, regPlot?.color ?? plotDef.color ?? '#2962FF'),
               lineWidth:        Math.max(1, plotDef.lineWidth ?? regPlot?.lineWidth ?? 1) as 1 | 2 | 3 | 4,
               lineStyle:        plotSeriesLineStyle(plotDef.lineStyle),
               priceLineVisible: false,
+              crosshairMarkerVisible: true,
               lastValueVisible: showPriceLabel,
               title:            showSeriesTitle ? this.seriesTitleForPlot(config, plotDef) : '',
               visible:          isPlotVisible,
@@ -1281,7 +1328,7 @@ export class ChartManager {
               color:            hl.color,
               lineWidth:        Math.min(4, hl.lineWidth ?? 1) as 1|2|3|4,
               lineStyle:        toLineStyle(hl.lineStyle),
-              axisLabelVisible: false,
+              axisLabelVisible: this._hlineAxisLabelVisible(),
             });
             hlineRefs.push(pl);
           }
@@ -3561,9 +3608,9 @@ export class ChartManager {
     plotAllowsLastValue = true,
     paneIndex = 0,
   ): boolean {
-    const areaEnabled = paneIndex < 2
-      ? this._candleAreaPriceLabelsEnabled
-      : this._indicatorAreaPriceLabelsEnabled;
+    const areaEnabled = this._isIndicatorSubPane(paneIndex)
+      ? this._indicatorAreaPriceLabelsEnabled
+      : this._candleAreaPriceLabelsEnabled;
     return areaEnabled
       && plotAllowsLastValue
       && config.lastValueVisible !== false;
@@ -3632,13 +3679,14 @@ export class ChartManager {
             : Math.max(1, plot.lineWidth ?? regPlot?.lineWidth ?? 1)) as 1 | 2 | 3 | 4)
           : Math.max(1, plot.lineWidth ?? regPlot?.lineWidth ?? 1);
         opts['lineStyle'] = plotSeriesLineStyle(plot.lineStyle);
+        opts['crosshairMarkerVisible'] = true;
         let plotAllows = true;
         if (entry.type === 'IchimokuCloud') {
           plotAllows = entry.seriesMeta[i]?.plotId !== 'plot2';
         }
         const showPriceLabel = this.shouldShowSeriesPriceLabel(config, plotAllows, paneIdx);
         opts['lastValueVisible'] = showPriceLabel && visible;
-        opts['title'] = paneIdx < 2 && showPriceLabel && visible
+        opts['title'] = this._showSeriesTitleOnChart(paneIdx) && showPriceLabel && visible
           ? this.seriesTitleForPlot(config, plot, plotAllows, paneIdx)
           : '';
       } else {
@@ -3678,7 +3726,7 @@ export class ChartManager {
             color:            hl.color,
             lineWidth:        Math.min(4, hl.lineWidth ?? 1) as 1|2|3|4,
             lineStyle:        toLineStyle2(hl.lineStyle),
-            axisLabelVisible: false,
+            axisLabelVisible: this._hlineAxisLabelVisible(),
           });
           entry.hlineRefs.push(pl);
         }
@@ -4821,15 +4869,11 @@ export class ChartManager {
   getIndicatorValuesFromParams(params: MouseEventParams<Time>): Record<string, number[]> {
     const result: Record<string, number[]> = {};
     for (const [, entry] of this.indicators) {
-      const values: number[] = [];
-      for (const series of entry.seriesList) {
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any
-        const d = params.seriesData.get(series) as any;
-        const v = d != null
-          ? (typeof d.value === 'number' ? d.value : d.close ?? NaN)
-          : NaN;
-        values.push(v);
-      }
+      const values = this._plotOrderForEntry(entry).map(plotId => {
+        const idx = entry.seriesMeta.findIndex(m => m.plotId === plotId);
+        if (idx < 0) return NaN;
+        return this._seriesValueAtCrosshairTime(entry.seriesList[idx], params);
+      });
       if (values.some(v => !isNaN(v))) {
         result[entry.type] = values;
       }