diff --git a/doc/item_bonus.txt b/doc/item_bonus.txt
index a12719aeadf..ac0e17ebab7 100644
--- a/doc/item_bonus.txt
+++ b/doc/item_bonus.txt
@@ -297,6 +297,9 @@ bonus2 bAddEff2,eff,n;      		Adds a n/100% chance to cause status eff on self w
 bonus2 bAddEffWhenHit,eff,n;		Adds a n/100% chance to cause status eff on the enemy when being hit by physical damage
 bonus2 bResEff,eff,n;       		Adds a n/100% tolerance to status eff
 
+bonus2 bResSC,sc,n;         		Adds a n/100% relative tolerance to status change specified by SC constants.
+bonus2 bResSC2,sc,n;         		Adds a n/100% absolute tolerance to status change specified by SC constants.
+
 bonus3 bAddEff,eff,n,atf;       		Adds a n/100% chance to cause status eff on the target when attacking
 bonus4 bAddEff,eff,n,atf,t;     		Adds a n/100% chance to cause status eff for t milliseconds on the target when attacking
 bonus3 bAddEffWhenHit,eff,n,atf;		Adds a n/100% chance to cause status eff on the target when being hit by physical damage
diff --git a/src/map/map.h b/src/map/map.h
index fd5a6b0464d..008ea196460 100644
--- a/src/map/map.h
+++ b/src/map/map.h
@@ -488,6 +488,8 @@ enum _sp {
 	SP_STATE_NORECOVER_RACE, SP_CRITICAL_RANGEATK, SP_MAGIC_ADDRACE2, SP_IGNORE_MDEF_RACE2_RATE, // 2079-2082
 	SP_WEAPON_ATK_RATE, SP_WEAPON_MATK_RATE, SP_DROP_ADDRACE, SP_DROP_ADDCLASS, SP_NO_MADO_FUEL, // 2083-2087
 	SP_IGNORE_DEF_CLASS_RATE, SP_REGEN_PERCENT_HP, SP_REGEN_PERCENT_SP, //2088-2091
+
+	SP_RES_SC, SP_RES_SC2,
 };
 
 enum _look {
diff --git a/src/map/pc.c b/src/map/pc.c
index 75d1ad6c5cf..f228868831a 100755
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -60,6 +60,8 @@ struct eri *pc_sc_display_ers = NULL;
 struct eri *pc_itemgrouphealrate_ers = NULL;
 struct eri *num_reg_ers;
 struct eri *str_reg_ers;
+struct eri *pc_resSC_ers = NULL;
+struct eri *pc_resSC2_ers = NULL;
 int pc_expiration_tid = INVALID_TIMER;
 
 struct fame_list smith_fame_list[MAX_FAME_LIST];
@@ -1258,6 +1260,11 @@ bool pc_authok(struct map_session_data *sd, uint32 login_id2, time_t expiration_
 	sd->qi_display = NULL;
 	sd->qi_count = 0;
 
+	sd->resSC = NULL;
+	sd->resSC_count = 0;
+	sd->resSC2 = NULL;
+	sd->resSC2_count = 0;
+
 	//warp player
 	if ((i=pc_setpos(sd,sd->status.last_point.map, sd->status.last_point.x, sd->status.last_point.y, CLR_OUTSIGHT)) != SETPOS_OK) {
 		ShowError ("Last_point_map %s - id %d not found (error code %d)\n", mapindex_id2name(sd->status.last_point.map), sd->status.last_point.map, i);
@@ -2497,6 +2504,148 @@ void pc_itemgrouphealrate_clear(struct map_session_data *sd) {
 	}
 }
 
+/** Get bResSC rate from player
+* @param sd Player
+* @param type SC Type
+* @return Resistance rate
+* @author Cydh
+*/
+short pc_resSC(struct map_session_data *sd, sc_type type) {
+	uint8 i;
+
+	nullpo_ret(sd);
+
+	if (!sd->resSC || !sd->resSC_count)
+		return 0;
+	for (i = 0; i < sd->resSC_count; i++) {
+		if (sd->resSC[i]->sc == type)
+			return sd->resSC[i]->rate;
+	}
+	return 0;
+}
+
+/** Add bResSC data to player
+* @param sd Player
+* @param type SC Type
+* @param rate
+* @author Cydh
+*/
+void pc_resSC_add(struct map_session_data *sd, sc_type type, short rate) {
+	struct s_pc_resSC *entry;
+	uint8 i;
+
+	for (i = 0; i < sd->resSC_count; i++) {
+		if (sd->resSC[i]->sc == type)
+			break;
+	}
+
+	if (i != sd->resSC_count) {
+		sd->resSC[i]->rate += rate;
+		return;
+	}
+
+	if (i == UINT8_MAX) {
+		ShowError("pc_resSC_add: Reached max (%d) possible bonuses for this player %d\n", UINT8_MAX);
+		return;
+	}
+
+	entry = ers_alloc(pc_resSC_ers, struct s_pc_resSC);
+	entry->sc = type;
+	entry->rate = rate;
+
+	RECREATE(sd->resSC, struct s_pc_resSC *, sd->resSC_count+1);
+	sd->resSC[sd->resSC_count++] = entry;
+}
+
+/** Clear resSC from player
+* @param sd Player
+* @author Cydh
+*/
+void pc_resSC_clear(struct map_session_data *sd) {
+	if (!sd || !sd->resSC_count)
+		return;
+	else {
+		uint8 i;
+		for( i = 0; i < sd->resSC_count; i++ )
+			ers_free(pc_resSC_ers, sd->resSC[i]);
+		sd->resSC_count = 0;
+		aFree(sd->resSC);
+		sd->resSC = NULL;
+	}
+}
+
+
+/** Get bResSC2 rate from player
+* @param sd Player
+* @param type SC Type
+* @return Resistance rate
+* @author Cydh
+*/
+short pc_resSC2(struct map_session_data *sd, sc_type type) {
+	uint8 i;
+
+	nullpo_ret(sd);
+
+	if (!sd->resSC2 || !sd->resSC2_count)
+		return 0;
+
+	for (i = 0; i < sd->resSC2_count; i++) {
+		if (sd->resSC2[i]->sc == type)
+			return sd->resSC2[i]->rate;
+	}
+	return 0;
+}
+
+/** Add bResSC2 data to player
+* @param sd Player
+* @param type SC Type
+* @param rate
+* @author Cydh
+*/
+void pc_resSC2_add(struct map_session_data *sd, sc_type type, short rate) {
+	struct s_pc_resSC *entry;
+	uint8 i;
+
+	for (i = 0; i < sd->resSC2_count; i++) {
+		if (sd->resSC2[i]->sc == type)
+			break;
+	}
+
+	if (i != sd->resSC2_count) {
+		sd->resSC2[i]->rate += rate;
+		return;
+	}
+
+	if (i == UINT8_MAX) {
+		ShowError("pc_resSC2_add: Reached max (%d) possible bonuses for this player %d\n", UINT8_MAX);
+		return;
+	}
+
+	entry = ers_alloc(pc_resSC2_ers, struct s_pc_resSC);
+	entry->sc = type;
+	entry->rate = rate;
+
+	RECREATE(sd->resSC2, struct s_pc_resSC *, sd->resSC2_count+1);
+	sd->resSC2[sd->resSC2_count++] = entry;
+}
+
+/** Clear resSC2 from player
+* @param sd Player
+* @author Cydh
+*/
+void pc_resSC2_clear(struct map_session_data *sd) {
+	if (!sd || !sd->resSC2_count)
+		return;
+	else {
+		uint8 i;
+		for( i = 0; i < sd->resSC2_count; i++ )
+			ers_free(pc_resSC2_ers, sd->resSC2[i]);
+		sd->resSC2_count = 0;
+		aFree(sd->resSC2);
+		sd->resSC2 = NULL;
+	}
+}
+
 /*==========================================
  * Add a bonus(type) to player sd
  * format: bonus bBonusName,val;
@@ -3807,6 +3956,16 @@ void pc_bonus2(struct map_session_data *sd,int type,int type2,int val)
 		if (sd->state.lr_flag != 2)
 			sd->dropaddclass[type2] += val;
 		break;
+	case SP_RES_SC: // bonus2 bResSC,sc,n;
+		PC_BONUS_CHK_SC(type2, SP_RESSC);
+		if (sd->state.lr_flag != 2)
+			pc_resSC_add(sd, (sc_type)type2, val);
+		break;
+	case SP_RES_SC2: // bonus2 bResSC2,sc,n;
+		PC_BONUS_CHK_SC(type2, SP_RES_SC2);
+		if (sd->state.lr_flag != 2)
+			pc_resSC2_add(sd, (sc_type)type2, val);
+		break;
 	default:
 		if (running_npc_stat_calc_event) {
 			ShowWarning("pc_bonus2: unknown bonus type %d %d %d in OnPCStatCalcEvent!\n", type, type2, val);
@@ -12426,6 +12585,8 @@ void do_final_pc(void) {
 
 	ers_destroy(pc_sc_display_ers);
 	ers_destroy(pc_itemgrouphealrate_ers);
+	ers_destroy(pc_resSC_ers);
+	ers_destroy(pc_resSC2_ers);
 	ers_destroy(num_reg_ers);
 	ers_destroy(str_reg_ers);
 }
@@ -12470,6 +12631,8 @@ void do_init_pc(void) {
 
 	pc_sc_display_ers = ers_new(sizeof(struct sc_display_entry), "pc.c:pc_sc_display_ers", ERS_OPT_FLEX_CHUNK);
 	pc_itemgrouphealrate_ers = ers_new(sizeof(struct s_pc_itemgrouphealrate), "pc.c:pc_itemgrouphealrate_ers", ERS_OPT_NONE);
+	pc_resSC_ers = ers_new(sizeof(struct s_pc_resSC), "pc.c:pc_resSC_ers", ERS_OPT_NONE);
+	pc_resSC2_ers = ers_new(sizeof(struct s_pc_resSC), "pc.c:pc_resSC2_ers", ERS_OPT_NONE);
 	num_reg_ers = ers_new(sizeof(struct script_reg_num), "pc.c:num_reg_ers", ERS_OPT_CLEAN|ERS_OPT_FLEX_CHUNK);
 	str_reg_ers = ers_new(sizeof(struct script_reg_str), "pc.c:str_reg_ers", ERS_OPT_CLEAN|ERS_OPT_FLEX_CHUNK);
 
diff --git a/src/map/pc.h b/src/map/pc.h
index c8be9459226..17efab70a7f 100644
--- a/src/map/pc.h
+++ b/src/map/pc.h
@@ -190,6 +190,12 @@ struct s_pc_itemgrouphealrate {
 	short rate; /// Rate
 };
 
+/// bResEff2 struct
+struct s_pc_resSC {
+	sc_type sc;
+	short rate;
+};
+
 ///Timed bonus 'bonus_script' struct [Cydh]
 struct s_bonus_script_entry {
 	struct script_code *script;
@@ -705,6 +711,9 @@ struct map_session_data {
 	struct s_pc_itemgrouphealrate **itemgrouphealrate; /// List of Item Group Heal rate bonus
 	uint8 itemgrouphealrate_count; /// Number of rate bonuses
 
+	struct s_pc_resSC **resSC, **resSC2;
+	unsigned short resSC_count, resSC2_count;
+
 	/* Expiration Timer ID */
 	int expiration_tid;
 	time_t expiration_time;
@@ -740,6 +749,8 @@ struct map_session_data {
 
 extern struct eri *pc_sc_display_ers; /// Player's SC display table
 extern struct eri *pc_itemgrouphealrate_ers; /// Player's Item Group Heal Rate table
+extern struct eri *pc_resSC_ers; /// Player's bResSC table
+extern struct eri *pc_resSC2_ers; /// Player's bResSC2 table
 
 /**
  * ERS for the bulk of pc vars
@@ -1326,6 +1337,11 @@ void pc_show_questinfo_reinit(struct map_session_data *sd);
 
 bool pc_job_can_entermap(enum e_job jobid, int m, int group_lv);
 
+short pc_resSC(struct map_session_data *sd, sc_type type);
+void pc_resSC_clear(struct map_session_data *sd);
+short pc_resSC2(struct map_session_data *sd, sc_type type);
+void pc_resSC2_clear(struct map_session_data *sd);
+
 #if defined(RENEWAL_DROP) || defined(RENEWAL_EXP)
 int pc_level_penalty_mod(int level_diff, uint32 mob_class, enum e_mode mode, int type);
 #endif
diff --git a/src/map/script_constants.h b/src/map/script_constants.h
index 1340111278f..f77f3094856 100644
--- a/src/map/script_constants.h
+++ b/src/map/script_constants.h
@@ -706,6 +706,8 @@
 	export_constant2("bIgnoreDefClassRate", SP_IGNORE_DEF_CLASS_RATE);
 	export_constant2("bRegenPercentHP", SP_REGEN_PERCENT_HP);
 	export_constant2("bRegenPercentSP", SP_REGEN_PERCENT_SP);
+	export_constant2("bResSC", SP_RES_SC);
+	export_constant2("bResSC2", SP_RES_SC2);
 
 	/* equip indices */
 	export_constant(EQI_COMPOUND_ON);
diff --git a/src/map/status.c b/src/map/status.c
index 3328f95d15f..75d1807e147 100644
--- a/src/map/status.c
+++ b/src/map/status.c
@@ -3448,6 +3448,8 @@ int status_calc_pc_(struct map_session_data* sd, enum e_status_calc_opt opt)
 	pc_delautobonus(sd,sd->autobonus3,ARRAYLENGTH(sd->autobonus3),true);
 
 	pc_itemgrouphealrate_clear(sd);
+	pc_resSC_clear(sd);
+	pc_resSC2_clear(sd);
 
 	running_npc_stat_calc_event = true;
 	npc_script_event(sd, NPCE_STATCALC);
@@ -8041,6 +8043,12 @@ int status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_typ
 			tick_def2 = status->luk * 100;
 			break;
 		default:
+			if (sd) { // Adjust the rate from bResSC and bResSC2 [Cydh]
+				if (sd->resSC2 && sd->resSC2_count)
+					rate -= pc_resSC2(sd, type);
+				if (sd->resSC && sd->resSC_count)
+					rate -= rate * pc_resSC(sd, type) / 10000;
+			}
 			// Effect that cannot be reduced? Likely a buff.
 			if (!(rnd()%10000 < rate))
 				return 0;
@@ -8093,6 +8101,9 @@ int status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_typ
 		rate -= rate*sc_def/10000;
 		rate -= sc_def2;
 
+		if (sd && sd->resSC2 && sd->resSC2_count)
+			rate -= pc_resSC2(sd, type);
+
 		// Minimum chances
 		switch (type) {
 			case SC_BITE:
@@ -8108,6 +8119,9 @@ int status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_typ
 				rate -= rate*sd->sc.data[SC_COMMONSC_RESIST]->val1/100;
 		}
 
+		if (sd && sd->resSC && sd->resSC_count)
+			rate -= rate * pc_resSC(sd, type) / 10000;
+
 		// Aegis accuracy
 		if(rate > 0 && rate%10 != 0) rate += (10 - rate%10);
 	}
diff --git a/src/map/unit.c b/src/map/unit.c
index 5e0d66f7b4b..84a053282ca 100644
--- a/src/map/unit.c
+++ b/src/map/unit.c
@@ -3244,6 +3244,8 @@ int unit_free(struct block_list *bl, clr_type clrtype)
 				pc_bonus_script_clear(sd, BSF_REM_ALL);
 
 			pc_itemgrouphealrate_clear(sd);
+			pc_resSC_clear(sd);
+			pc_resSC2_clear(sd);
 			break;
 		}
 		case BL_PET: {