Question: what chapter does the anime ouran highschool host club end
Answer: January 5 , 2005 ISBN 978 - 4 - 592 - 18083 - 8 March 7 , 2006 ( NA ) March 14 , 2007 ( SG ) ISBN 978 - 1 - 4215 - 0329 - 5 ( NA ) ISBN 981 - 269 - 052 - 2 ( SG ) Chapters 17 -- 21 Extra Episode : Mori 's Secret When Haruhi fails to score at the top of her class on exams , her scholarship is in jeopardy .