Welcome Back For An Extracurricular Lesson, Sempai1998–2016

Season 1

34 episodes1998

Season 2

37 episodes1999

Season 3

40 episodes2000

Season 4

45 episodes2001

Season 5

39 episodes2002

Season 6

39 episodes2003

Season 7

31 episodes2004

Season 8

36 episodes2005

Season 9

37 episodes2006

Season 10

39 episodes2007

Season 11

37 episodes2008

Season 12

42 episodes2009

Season 13

36 episodes2010

Season 14

27 episodes2011

Season 15

21 episodes2012

Season 16

23 episodes2013

Season 17

20 episodes2014

Season 18

17 episodes2015

Season 19

4 episodes2016