diff --git a/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx b/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
index 7b5b433..263c14c 100644
--- a/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
+++ b/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
@@ -157,7 +157,10 @@ const TradeSignalMiniChart: React.FC<Props> = ({
       onNewCandle: handleNewCandle,
       enabled: enabled && useUpbit,
       source: chartRealtimeSource,
-      deepObvHistory: needsDeepObv,
+      deepObvHistory: false,
+      // OBV 있을 때: 200봉만 가져오면 OBV가 0부터 시작 → 신호선과 시각적 발산 보장
+      // WARMUP_COUNT(600) 불필요 — 미니차트 지표(OBV SMA-9, W%R 등)는 짧은 웜업으로 충분
+      fetchCount: needsDeepObv ? 200 : undefined,
     }), [handleTickUpdate, handleNewCandle, enabled, useUpbit, needsDeepObv, chartRealtimeSource]),
   );
 
@@ -300,7 +303,6 @@ const TradeSignalMiniChart: React.FC<Props> = ({
         candleOverlayToggles={candleOverlayToggles}
         onToggleCandleOverlay={handleToggleCandleOverlay}
         crosshairInfoVisible={false}
-        resolveInitialDisplayCount={needsDeepObv ? () => 99999 : undefined}
       />
       )}
     </div>
diff --git a/frontend/src/hooks/useChartRealtimeData.ts b/frontend/src/hooks/useChartRealtimeData.ts
index bc3738a..e92eab7 100644
--- a/frontend/src/hooks/useChartRealtimeData.ts
+++ b/frontend/src/hooks/useChartRealtimeData.ts
@@ -9,6 +9,8 @@ interface Options {
   onNewCandle: (bar: OHLCVBar) => void;
   enabled?: boolean;
   deepObvHistory?: boolean;
+  /** 직접 지정할 페치 봉 수 — UPBIT_DIRECT 전용 (deepObvHistory·WARMUP_COUNT 무시) */
+  fetchCount?: number;
   source?: ChartRealtimeSource;
 }
 
@@ -29,6 +31,7 @@ export function useChartRealtimeData(
     onNewCandle: opts.onNewCandle,
     enabled: opts.enabled !== false && !useStomp,
     deepObvHistory: opts.deepObvHistory,
+    fetchCount: opts.fetchCount,
   });
   return useStomp ? stomp : upbit;
 }
diff --git a/frontend/src/hooks/useUpbitData.ts b/frontend/src/hooks/useUpbitData.ts
index 357a98c..db29251 100644
--- a/frontend/src/hooks/useUpbitData.ts
+++ b/frontend/src/hooks/useUpbitData.ts
@@ -26,6 +26,8 @@ interface UpbitDataOptions {
   enabled?:     boolean;
   /** OBV 등 누적 지표: 상장 이력에 가깝게 장기 캔들 로드 */
   deepObvHistory?: boolean;
+  /** 직접 지정할 페치 봉 수 (deepObvHistory·WARMUP_COUNT 무시) */
+  fetchCount?: number;
 }
 
 interface UseUpbitDataReturn {
@@ -88,9 +90,8 @@ export function useUpbitData(
     const marketChanged = prevMarketRef.current !== '' && prevMarketRef.current !== market;
     prevMarketRef.current = market;
 
-    const fetchCount = opts.deepObvHistory
-      ? OBV_DEEP_HISTORY
-      : DISPLAY_COUNT + WARMUP_COUNT;
+    const fetchCount = opts.fetchCount
+      ?? (opts.deepObvHistory ? OBV_DEEP_HISTORY : DISPLAY_COUNT + WARMUP_COUNT);
 
     fetchUpbitCandlesCached(market, timeframe, fetchCount, marketChanged)
       .then(newBars => {
@@ -108,7 +109,7 @@ export function useUpbitData(
       });
 
     return () => { cancelled = true; };
-  }, [market, timeframe, opts.enabled, opts.deepObvHistory]);
+  }, [market, timeframe, opts.enabled, opts.deepObvHistory, opts.fetchCount]);
 
   // ── 2. WebSocket: 실시간 체결 구독 ────────────────────────────────────
   const handleMessage = useCallback((msg: UpbitMessage) => {
diff --git a/frontend/src/utils/ChartManager.ts b/frontend/src/utils/ChartManager.ts
index 0022566..dc8fa00 100644
--- a/frontend/src/utils/ChartManager.ts
+++ b/frontend/src/utils/ChartManager.ts
@@ -897,11 +897,8 @@ export class ChartManager {
           const fallbackColor = config.type === 'OBV' && plotDef.id === 'plot0'
             ? (regPlot?.color ?? '#2196F3')
             : (regPlot?.color ?? plotDef.color ?? '#2962FF');
-          const resolvedColor = config.type === 'OBV' && plotDef.id === 'plot0'
-            ? '#FFFF00'
-            : resolvePlotLineColor(plotDef.color, fallbackColor);
           series = this.chart.addSeries(LineSeries, {
-            color:            resolvedColor,
+            color:            resolvePlotLineColor(plotDef.color, fallbackColor),
             lineWidth:        (config.type === 'OBV' && plotDef.id === 'plot0'
               ? Math.max(2, plotDef.lineWidth ?? regPlot?.lineWidth ?? 2)
               : Math.max(1, plotDef.lineWidth ?? 1)) as 1 | 2 | 3 | 4,
@@ -913,19 +910,6 @@ export class ChartManager {
             ...(indicatorPriceFormat ? { priceFormat: indicatorPriceFormat } : {}),
           }, pane);
           series.setData(filtered.map(p => ({ time: p.time as Time, value: p.value })));
-          if (config.type === 'OBV') {
-            const p0 = result.plots['plot0'] as PlotData | undefined;
-            const p1 = result.plots['plot1'] as PlotData | undefined;
-            console.error(
-              `[OBV addIndicator] plotDef.id=${plotDef.id}`,
-              '| visible:', isPlotVisible,
-              '| filteredLen:', filtered.length,
-              '| first val:', filtered[0]?.value,
-              '| last val:', filtered[filtered.length - 1]?.value,
-              '| p0.length:', p0?.length, '| p1.length:', p1?.length,
-              '| pane:', pane,
-            );
-          }
           seriesMeta.push({ plotId: plotDef.id, isHistogram: false, color: plotDef.color });
         }
 
@@ -2903,12 +2887,7 @@ export class ChartManager {
         const fallbackColor = entry.type === 'OBV' && pid === 'plot0'
           ? (regPlot?.color ?? '#2196F3')
           : (regPlot?.color ?? plot.color ?? '#aaa');
-        opts['color'] = (entry.type === 'OBV' && pid === 'plot0')
-          ? '#FFFF00'
-          : resolvePlotLineColor(plot.color, fallbackColor);
-        if (entry.type === 'OBV') {
-          console.error(`[OBV applyStyle] pid=${pid} visible=${visible} color=${opts['color']}`);
-        }
+        opts['color'] = resolvePlotLineColor(plot.color, fallbackColor);
         opts['lineWidth'] = entry.type === 'OBV' && pid === 'plot0'
           ? Math.max(2, plot.lineWidth ?? regPlot?.lineWidth ?? 2)
           : Math.max(1, plot.lineWidth ?? regPlot?.lineWidth ?? 1);