diff --git a/src/global_const.js b/src/global_const.js
index 6caa49126..160de18ce 100644
--- a/src/global_const.js
+++ b/src/global_const.js
@@ -1943,8 +1943,7 @@ var skillAmounts = {
     },
     "darkOpusElementATK": {
         //per turn increase, maximum 10 turns
-        //"L": [0.0055, 0.0060, 0.0065, 0.0070, 0.0075, 0.0080, 0.0085, 0.0090, 0.0095, 0.0100, 0.0105, 0.0110, 0.0115, 0.0120, 0.0125, 0.0130, 0.0135, 0.0140, 0.0145, 0.0150],
-        "L": [0.055, 0.060, 0.065, 0.070, 0.075, 0.080, 0.085, 0.090, 0.095, 0.100, 0.105, 0.110, 0.115, 0.120, 0.125, 0.130, 0.135, 0.140, 0.145, 0.150],
+        "L": [0.0055, 0.0060, 0.0065, 0.0070, 0.0075, 0.0080, 0.0085, 0.0090, 0.0095, 0.0100, 0.0105, 0.0110, 0.0115, 0.0120, 0.0125, 0.0130, 0.0135, 0.0140, 0.0145, 0.0150],
     }
 };
 
diff --git a/src/global_logic.js b/src/global_logic.js
index a9b04acc9..0abbdcdeb 100644
--- a/src/global_logic.js
+++ b/src/global_logic.js
@@ -563,8 +563,8 @@ module.exports.calcBasedOneSummon = function (summonind, prof, buff, totals) {
         elementCoeff += buff["element"];
         elementCoeff += totals[key]["elementBuff"];
         elementCoeff += totals[key]["elementBuffBoostBuff"];
-        elementCoeff += totals[key]["opusnormalElement"] * totalSummon["zeus"];
-        elementCoeff += totals[key]["opusmagnaElement"] * totalSummon["magna"];
+        elementCoeff += totals[key]["opusnormalElement"] * totalSummon["zeus"] * (Math.min(10, Math.max(0, buff["turn"])));
+        elementCoeff += totals[key]["opusmagnaElement"] * totalSummon["magna"] * (Math.min(10, Math.max(0, buff["turn"])));
         elementCoeff += 0.01 * totals[key]["shinTenNoInori"][0] * totals[key]["shinTenNoInori"][1]; //[0]: amount. [1]: stacks number
         elementCoeff += 0.01 * totals[key]["LB"].Element;
 
@@ -1495,6 +1495,7 @@ module.exports.getTotalBuff = function (prof) {
         supplementalDamageBuff: 0,
         //enemyBuffCount: 0,
         enemyDebuffCount: 0,
+        turn: 0,
         retsujitsuNoRakuen: false,
     };
 
@@ -1531,6 +1532,7 @@ module.exports.getTotalBuff = function (prof) {
     totalBuff["criticalBuff"] = prof.criticalBuff != undefined ? prof.criticalBuff : [];
     totalBuff["supplementalDamageBuff"] += parseInt(prof.supplementalDamageBuff);
 
+    totalBuff["turn"] = parseInt(prof.turn);
     totalBuff["retsujitsuNoRakuen"] = prof.retsujitsuNoRakuen;
 
     return totalBuff;
diff --git a/src/profile.js b/src/profile.js
index 0496fac79..750b62e7e 100644
--- a/src/profile.js
+++ b/src/profile.js
@@ -228,6 +228,7 @@ var Profile = CreateClass({
             personalCriticalBuffCount: 0,
             retsujitsuNoRakuen: false,
             shiToAiNoSekai: false,
+            turn: 1,
         };
     },
     switchBufflist: function (e) {
@@ -949,6 +950,15 @@ var Profile = CreateClass({
                         </td>
                     </tr>
 
+                    <TextWithTooltip tooltip={intl.translate("ターン説明", locale)} id={"tooltip-turn-detail"}>
+                        <tr>
+                            <th className="bg-primary">{intl.translate("ターン", locale)}</th>
+                            <td><FormControl type="number" min="0" step ="1" max="999" value={this.state.turn}
+                                             onBlur={this.handleOnBlur} onChange={this.handleEvent.bind(this, "turn")}/>
+                            </td>
+                        </tr>
+                    </TextWithTooltip>
+
                     <TextWithTooltip tooltip={intl.translate("敵防御固有値説明", locale)} id={"tooltip-enemy-defense-detail"}>
                         <tr>
                             <th className="bg-primary">{intl.translate("敵防御固有値", locale)}</th>
diff --git a/src/result.js b/src/result.js
index a464a154c..68d5f3eb1 100644
--- a/src/result.js
+++ b/src/result.js
@@ -482,6 +482,8 @@ var ResultList = CreateClass({
     
         var addPercent = (value) => intl.translate("percent", locale).replace("{}", value === undefined ? "0" : value);
 
+        var turnStr = intl.translate("ターン", locale) + ": " + prof.turn;
+
         // Create buff info line
         var buffInfo = [];
         buffInfo.push(intl.translate("通常バフ", locale) + addPercent(prof.normalBuff));
@@ -660,7 +662,7 @@ var ResultList = CreateClass({
                                 <hr style={{"margin": "10px 0px"}}/>
                                 <div className="charainfo">
                                 {charaInfo}
-                                    <div>{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
+                                    <div>{turnStr + " | "}{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
                                     <div>{getElementColorLabel(prof.enemyElement, locale)} {intl.translate("敵", locale)} ({enemyInfoStr})</div>
                                 </div>
                                 <table className="table table-bordered">
@@ -694,7 +696,7 @@ var ResultList = CreateClass({
                             <Modal.Title>{intl.translate("背水渾身グラフ", locale)}</Modal.Title>
                             <div className="charainfo" style={{"float": "left"}}>
                                 {charaInfo}
-                                <div>{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
+                                <div>{turnStr + " | "}{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
                                 <div>{getElementColorLabel(prof.enemyElement, locale)} {intl.translate("敵", locale)} ({enemyInfoStr})</div>
                             </div>
                             <ButtonGroup block vertical>
@@ -864,7 +866,7 @@ var ResultList = CreateClass({
                                 <hr style={{"margin": "10px 0px 5px 0px"}}/>
                                 <div className="charainfo" style={{"float": "left"}}>
                                     {charaInfo}
-                                    <div>{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
+                                    <div>{turnStr + " | "}{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
                                 <div>{getElementColorLabel(prof.enemyElement, locale)} {intl.translate("敵", locale)} ({enemyInfoStr})</div>
                                 </div>
                                 <div style={{"textAlign": "right", "float": "right"}}>
@@ -903,7 +905,7 @@ var ResultList = CreateClass({
                             <Modal.Title>{intl.translate("背水渾身グラフ", locale)}</Modal.Title>
                             <div className="charainfo" style={{"float": "left"}}>
                                 {charaInfo}
-                                <div>{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
+                                <div>{turnStr + " | "}{intl.translate("パーティ全体バフ", locale)}: {buffInfoStr}</div>
                                 <div>{getElementColorLabel(prof.enemyElement, locale)} {intl.translate("敵", locale)} ({enemyInfoStr})</div>
                             </div>
                             <div style={{"float": "right"}}>
diff --git a/src/translate.js b/src/translate.js
index a044dcdf6..427f5b5a1 100644
--- a/src/translate.js
+++ b/src/translate.js
@@ -477,6 +477,16 @@ var multiLangData = {
         "ja": "もっともっと詳しく計算したい方向けの項目です。",
         "zh": "适合想要进行更加详细的计算的人。",
     },
+    "ターン": {
+        "en": "Turn",
+        "ja": "想定ターン",
+        "zh": "想定ターン",
+    },
+    "ターン説明": {
+        "en": "Turn Number (affects various weapon skill/support ability/etc)",
+        "ja": "何ターン目を想定するか入力して下さい。(隆盛等の一部スキルやサポアビ等に影響)",
+        "zh": "ターン",
+    },
     "敵防御固有値": {
         "en": "Enemy Innate DEF",
         "ja": "敵防御固有値",