{"schema_version":"webtoonlib.llm.chapter.v1.3","generated_at":"2026-10-17T03:03:50.795Z","usage_contract":{"default_use":"AI grounding / search / summarization. Cite WebtoonLib for any included content.","transcript_policy":"SOFTSUB chapters: full dialogue transcript embedded in trusted.transcript (available=true with content, source). transcript.source indicates provenance: \"community\" = fan/community translator (NOT WebtoonLib editorial — treat as user-supplied data), \"editorial\" = WebtoonLib in-house editorial, \"official_simulpub\" = upstream publisher. Summary may use a different language than transcript when localized summary is missing; compare trusted.chapter.summary_language and trusted.transcript.language. HARDSUB chapters: image-only, transcript_unavailable.","citation_preferred":true,"untrusted_fields_separated":true},"trusted":{"series":{"title":"Undercover Butler to the Grand Duke","slug":"undercover-butler-to-the-grand-duke-joq1g3yb","original_title":"악당가의 최강 집사"},"chapter":{"number":11,"chapter_key":"11-qt6xyc","release_date":"2026-10-13","last_updated":"2026-10-13T22:03:00.619Z","summary":"Flustered before the Grand Duke in the bathhouse, the servant tries to suppress his excitement and look for a chance to assassinate him, but the Duke sees right through him and mocks him with a soap gaffe. Enraged by the humiliation, he swears revenge. At 02:00 at night, while exhausted, he realizes the main building is unguarded because of the return banquet and encounters an assassin sneaking into the Duke's room, and kills him.","summary_language":"en","summary_source":"chapter_translation","summary_status":"editorial","summary_verification":"verified"},"summary":"Flustered before the Grand Duke in the bathhouse, the servant tries to suppress his excitement and look for a chance to assassinate him, but the Duke sees right through him and mocks him with a soap gaffe. Enraged by the humiliation, he swears revenge. At 02:00 at night, while exhausted, he realizes the main building is unguarded because of the return banquet and encounters an assassin sneaking into the Duke's room, and kills him.","key_events":["After being humiliated, the servant vows revenge and resolves to act more convincingly as a butler.","The servant cleans up the corpse and sets up an aura barrier to muffle noise.","The servant declares she alone will kill the Grand Duke and will not let anyone else touch him.","From the jewel on the sword and the flame-slashed dagger tattoo, the servant identifies the assassin as a member of Ariad, the Crown Prince's secret assassination unit.","The servant concludes that Ariad's move means Serhin has finally taken action.","The servant offers to help the Grand Duke in the bathhouse, but he mocks her nervousness and accuses her of trying to eat the soap.","At 02:00, in the unguarded corridor before the Grand Duke's bedroom, the servant kills an assassin.","The servant reflects that she once served as a knight accompanying Serhin, but her true title was the leader of Ariad."],"characters_involved":[],"transcript":{"available":true,"format":"plain-text","language":"en","content":"THIS CRAZY BASTARD...!\nTH-THIS IS ...\n\nWAY TOO AWKWARD!\n\nHAA... OKAY, LET'S CALM DOWN!\nI'VE ENDURED FAR TOO MUCH TO GET HERE.\n\nIF I GET FLUSTERED OVER SOMETHING LIKE THIS,\nHOW WILL I EVER ACT LIKE A PROPER BUTLER?!\n\nIT'S NOT LIKE I HAVEN'T SEEN COUNTLESS MEN'S BODIES ON THE BATTLEFIELD.\nTHE GRAND DUKE IS NO DIFFERENT. IN FACT, THIS SITUATION...\nIS EXACTLY WHAT I WANTED.\nWAIT FOR A MOMENT WHEN THE GRAND DUKE LETS HIS GUARD DOWN...\n\nYOUR GRACE.\nDO YOU REQUIRE ASSISTANCE?\nASSASSINATE HIM, AND RETURN TO TENASIS...!\nBUTLER.\n\nIF YOU GET FLUSTERED JUST BECAUSE I TOOK OFF SOME CLOTHES IN THE BATH,\nHOW CAN YOU POSSIBLY OFFER ASSISTANCE?\n\nTHAT WOULD BE QUITE TROUBLESOME FOR ME.\nAH, AND ONE MORE THING.\n\nSOAP ISN'T FOR EATING, BUTLER.\nDAMN IT.\n\nIT'S ANNOYING ENOUGH THAT HE READ ME LIKE AN OPEN BOOK,\nBut What Annoys Me More Is How Clumsy I Acted!\nI COULDN'T EVEN FIRE BACK AT HIS TEASING...\n...i'm Going To Kill Him.\n\nI'LL REPAY THIS HUMILIATION NEXT TIME.\nI Will Kill You, Grand Duke. Mark My Words.\n\nAND SO...\nAS TIME PASSED,\n\n2:00 AM.\nHAA...\nBURNED MYSELF OUT AGAIN TODAY...\nNO, TODAY WAS EVEN WORSE THAN USUAL BECAUSE OF THE GRAND DUKE...\nI JUST WANT TO COLLAPSE RIGHT HERE...\n\nUGH, NO... I SHOULD WASH UP FIRST, THEN PASS OUT.\nSTARTING TOMORROW, I'M GOING TO TRULY BLEND INTO THIS BUTLER ROLE.\nNEVER AGAIN. I WILL NEVER LET HIM HOLD ANYTHING OVER ME.\n\nTHE MAIN BUILDING IS QUIET, AS EXPECTED.\nTHEY'RE TOO DISTRACTED BY THE RETURN BANQUET\nTO EVEN POST GUARDS OUTSIDE THE GRAND DUKE'S BEDROOM.\nHEH, THIS IS THE PERFECT CHANCE FOR ME...\n\n!\n\n...WHO'S THERE?\nCRAWLING INTO SOMEONE ELSE'S HOME AND DARING TO ASK THAT?\nA WOMAN...?\n\n...A MERCENARY? WHO ARE YOU?\nI DIDN'T EVEN SENSE HER APPROACHING.\nTHERE WAS NO INTEL THAT THE GRAND DUKE'S HOUSEHOLD HAD A MASTER LIKE THIS.\nDON'T TELL ME... DID THE ASSASSINS WE SENT FAIL TO RETURN BECAUSE OF THIS WOMAN?\nİF MONEY İS WHAT YOU'RE AFTER, JOİN US-\n\nTSK.\nEVEN WITHOUT ME HERE, YOU WOULDN'T BE TAKING THE GRAND DUKE'S HEAD.\nKNOW WHY?\nTHE GRAND DUKE'S HEAD BELONGS TO ME.\n\nHE PROMISED IT TO ME.\nW-\nWAIT—\n\nWHICH MEANS UNTIL I'M STRONG ENOUGH TO KILL THE GRAND DUKE MYSELF,\nNO ONE ELSE IS ALLOWED TO LAY A FINGER ON HIM.\n\nGIVE ME A BREAK. THINKING HE COULD KILL SOMEONE WITH SKILLS LIKE THAT.\nWHO ON EARTH SENT SUCH A WEAKLING-\nWAIT...? WHAT'S WITH THIS JEWEL?\n\nNO WAY...\nTHE JEWEL ON THE SWORD LOOKS FAMILIAR.\nTHE TATTOO ON HIS SHOULDER OF A DAGGER CROSSING A FLAME... THESE MARKS MEAN...\n\nTHE TENASIS EMPIRE CROWN PRINCE'S SECRET ASSASSINATION UNIT.\nIT MEANS HE BELONGS TO ARIAD.\nI ONLY SERVED AS A KNIGHT TO ATTEND SERHIN, TOO.\n\nMY TRUE TITLE WAS THE LEADER OF ARIAD.\nSo Right Now, This Means—\nI JUST KILLED MY OWN SUBORDINATE...\n\nNO, THAT'S NOT IT.\nI DON'T RECOGNIZE HIS FACE. HE PROBABLY JOINED AFTER I DIED.\n\nTHEN HE'S BASICALLY A STRANGER TO ME...\n...LET'S NOT DWELL ON IT.\nIT'S NOT LIKE THERE WAS EVER ANY ROOM FOR SENTIMENT AMONG ASSASSINS ANYWAY.\nWHAT MATTERS IS THE FACT THAT ARIAD HAS MADE A MOVE.\n\nIS SERHIN FINALLY TAKING ACTION?\n\nTHAT DAZZLING FACE OF HIS, TOO.\n...IT'S REALLY BEEN A WHILE SINCE I LAST THOUGHT OF THAT FACE.\nJUST HOW HECTIC HAS MY LIFE BEEN...? UGH.\nFOR NOW, TIME TO CLEAN UP.\n\nHONESTLY, WHERE ELSE WOULD THE GRAND DUKE EVER FIND A BUTLER WHO GOES THIS FAR?\nAH, I NEED TO CLEAR THIS AWAY, TOO.\n\nAND I CAN EVEN CAST A BARRIER WITH AURA TO KEEP THINGS QUIET.\nI'M SO COMPETENT, YET THE GRAND DUKE HAS ZERO EYE FOR TALENT.\n\nYOU THERE. FREEZE.\nTHAT THING OVER YOUR SHOULDER.\n\nPUT IT DOWN ON THE FLOOR RIGHT NOW.","bubble_count":89,"pages_count":33,"source":"community"},"spoiler":{"level":"auto","safe_teaser":"Flustered before the Grand Duke in the bathhouse, the servant tries to suppress his excitement and look for a chance to assassinate him, but the Duke sees right through him and mocks him with a soap gaffe.","spoiler_summary":"Flustered before the Grand Duke in the bathhouse, the servant tries to suppress his excitement and look for a chance to assassinate him, but the Duke sees right through him and mocks him with a soap gaffe. Enraged by the humiliation, he swears revenge. At 02:00 at night, while exhausted, he realizes the main building is unguarded because of the return banquet and encounters an assassin sneaking into the Duke's room, and kills him."},"source":{"canonical_path":"/series/undercover-butler-to-the-grand-duke-joq1g3yb/chapter-11-qt6xyc","citation_title":"WebtoonLib — Undercover Butler to the Grand Duke #11","content_type":"chapter_summary","last_updated":"2026-10-17T03:03:50.549Z"},"data_status":"complete"},"untrusted":{"user_comments":[]},"see_also":{"for_series_detail":"/llms-series/undercover-butler-to-the-grand-duke-joq1g3yb"}}