diff --git a/src/npc/newSlaveIncestSex.tw b/src/npc/newSlaveIncestSex.tw
new file mode 100644
index 0000000000000000000000000000000000000000..859f7edde3d46450bc4368d9106a202c8869db09
--- /dev/null
+++ b/src/npc/newSlaveIncestSex.tw
@@ -0,0 +1,106 @@
+:: newSlaveIncestSex [nobr]
+
+<br/><br/>
+
+/* setup pronouns (switch on vagina for sisters and herms regardless of genes) */
+<<set $_oneshe = "she" >>
+<<set $_oneher = "her" >>
+<<if $sissy.vagina == -1 >>
+  <<set $_oneshe = "he" >>
+  <<set $_oneher = "his" >>
+<</if>>
+<<set $_othershe = "she" >>
+<<set $_otherher = "her" >>
+<<if $activeSlave.vagina == -1 >>
+  <<set $_othershe = "he" >>
+  <<set $_otherher = "his" >>
+<</if>>
+/* setup identifiers */
+<<set $_one = $sissy.relation >>
+<<set $_other = $activeSlave.relation >>
+/* gender relation descriptions */
+/* TODO: is there a function for gender-aware relationships? */
+<<if $sissy.vagina == -1 >>
+  <<if $sissy.relation == "mother" >><<set $_one = "father">><</if>>
+  <<if $sissy.relation == "sister" >><<set $_one = "brother">><</if>>
+  <<if $sissy.relation == "daughter" >><<set $_one = "son">><</if>>
+<</if>>
+<<if $activeSlave.vagina == -1 >>
+  <<if $activeSlave.relation == "mother" >><<set $_other = "father">><</if>>
+  <<if $activeSlave.relation == "sister" >><<set $_other = "brother">><</if>>
+  <<if $activeSlave.relation == "daughter" >><<set $_other = "son">><</if>>
+<</if>>
+<<if $_one == $_other >>
+  /* two sisters / brothers: idenfy by age */
+  <<if $sissy.physicalAge > $activeSlave.physicalAge >>
+    <<set $_one = "older "+$_one >>
+    <<set $_other = "younger "+$_other >>
+  <<else>>
+    <<set $_one = "younger "+$_one >>
+    <<set $_other = "older "+$_other >>
+  <</if>>
+<</if>>
+/* prepare some text passages based on options */
+<<set $_actions = [] >>
+<<set $_secretions = [] >>
+<<set $_genitals = [] >>
+<<if ($sissy.dick == 0) || ($activeSlave.dick == 0) >>
+  /* at least one vagina is present */
+  <<run $_actions.push("clit-flinging tongue-action") >> /* TODO: check oral skill of slaves */
+  <<run $_secretions.push("girlcum") >>
+  <<run $_genitals.push("licked wet cunt") >>
+<</if>>
+<<if ($sissy.dick != 0) || ($activeSlave.dick != 0) >>
+  /* at least one penis is present */
+  <<run $_actions.push("nose-pressed-against-balls deep-throats") >> /* TODO: check oral skill of slaves */
+  <<run $_secretions.push("semen") >>
+  <<run $_genitals.push("limp dangling cock") >>
+<</if>>
+<<if $_genitals.length == 1 >>
+  <<set $_genitals = $_genitals[0]+"s" >>
+<<else>>
+  <<set $_genitals = $_genitals.join(" and ") >>
+<</if>>
+
+/*
+SISSY SLAVE (FIRST): <br/>
+$_one ($sissy.relation) <br/>
+$sissy.physicalAge <br/>
+$_oneshe / $_oneher <br/>
+ACTIVE SLAVE (SECOND): <br/>
+$_other ($activeSlave.relation) <br/>
+$activeSlave.physicalAge <br/>
+$_othershe / $_otherher <br/>
+*/
+
+<span id="result">
+<<link "Order them to demonstrate their love for each other">>
+<<replace "#result">>
+Now that you own them, you want to see proof of their love for each other. You order them to perform mutual oral sex in front of you.
+Hesitantly they assume 69 position on your couch. They either never did this in front of a stranger or never had sex this way before. You remind them that they are sex slaves now. They need to follow all orders, especially sexual ones, so this is a comparatively gentle start.
+<br/><br/>
+The $_one shows more boldness as $_oneshe lowers $_oneher head towards $_oneher $_other's privates.
+<<if $activeSlave.dick == 0 >>
+Carefully, $_oneshe spreads $_oneher $_other's labia. Then $_oneshe continues to give $_oneher $_other's exposed pussy a few experimental licks. At first, $_oneher efforts seem to be futile, but after a while the $_other's clit becomes engorged and $_otherher juices start flowing.
+<<else>>
+Uncertain, $_oneshe grabs $_oneher $_other's penis. Then $_oneshe puts $_oneher $_other's flaccid member into $_oneher mouth and gives it an experimental sucke. At first, $_oneher efforts seem to be futile, but after a while the $_other sports a nice, hard erection.
+<</if>>
+As $_other's arousal grows, $_othershe becomes more eager to please $_otherher $_one, too. Going down on $_otherher's lover's genitals, $_othershe starts to mimic $_otherher ministrations.
+  <<if ($sissy.dick == 0) != ($activeSlave.dick == 0) >>
+  Of course, $_othershe has to adapt $_otherher actions to the <<if $sissy.dick == 0 >>pussy pressed against $_otherher lips.<<else>>dick in $_otherher mouth.<</if>>
+  <</if>>
+<br/><br/>
+You can tell how uncomfortable they are with you watching them, but as they become increasingly worked up, they lose their inhibitions. Soon, you watch really enthralling <<print $RecETSevent.replace("incest","") >> incest action at your office<<if $_actions.length >>, including some enthusiastic <<print $_actions.join(" and ")>><</if>>. Eventually, they bring each other to an impressive mutual orgasm. Their lusty moans are only muffled by each others crotches. Spent, exhausted, and with their faces covered in each others <<print $_secretions.join(" and ")>> respectively, they untangle to rest comfortably on your couch.
+<br/><br/>
+You indicate them to present themselves to you. Still shaking from the aftershocks of their orgasms, they are standing side by side in front of you. Naked with their  $_genitals dripping mixed juices. You simply nod, showing your approval. They are visibly relieved, not only sexually. They are more confident of having made the right choice in enslaving themselves to you since you seem @@.mediumaquamarine;trustworthy@@ and @@.hotpink;sympathetic.@@ They hug again, kissing and licking the sexual fluids off each others stained faces.
+<</replace>>
+<<set $sissy.devotion += 4>>
+<<set $sissy.trust += 4>>
+<<set $sissy.oralCount += 1>>
+<<set $oralTotal += 1>>
+<<set $activeSlave.devotion += 4>>
+<<set $activeSlave.trust += 4>>
+<<set $activeSlave.oralCount += 1>>
+<<set $oralTotal += 1>>
+<</link>>
+</span>
diff --git a/src/uncategorized/recETSWorkaround.tw b/src/uncategorized/recETSWorkaround.tw
index 9b2174b955a3c39c709745dec9b96e121d0af6f6..12631fad4a0ea01baa4b19ad55661a5e4dcb177c 100644
--- a/src/uncategorized/recETSWorkaround.tw
+++ b/src/uncategorized/recETSWorkaround.tw
@@ -435,7 +435,7 @@ The father hugs his son tight and slips a hand down his pants. They ought to be
 <<set $activeSlave.visualAge = $activeSlave.actualAge>>
 <<set $activeSlave.ovaryAge = $activeSlave.actualAge>>
 <<ResyncHeight $activeSlave>>
-<<set $activeSlave.vagina = 0>>
+<<set $activeSlave.vagina = -1>>
 <<if $activeSlave.actualAge < $potencyAge>>
 	<<set $activeSlave.pubertyXY = 0>>
 <</if>>
@@ -647,3 +647,10 @@ You turn to the child clutching her mother's grotesque belly.
 <<set $activeSlave.birthSurname = _familyBirthSurname>>
 
 <<AddSlave $activeSlave>>
+
+<<switch $RecETSevent>>
+	<<case "incest mother son" "incest father daughter" "incest brother sister" "incest sister sister" "incest brother brother" "incest twin sister" "incest twin brother" "incest twins mixed" "incest mother daughter" "incest father son">>
+		<<include "newSlaveIncestSex">>
+	<<default>>
+		/* do nothing */
+<</switch>>