Machigatta Light Novel no Tsukurikata

i want to give my impressions on the manga... the first 4 chapters are immaculate... funny as hell, without being to stupid chapter 5 is when the teacher comes in... really funny first time... but lacks on a re read 6-9 progressively worse each chapter... cumulating in no ending. the story is just not there... its a start point for the random... i hope that makes sense. the art is great for this style of mangai love the characters... besides the teacher the first 4 chapters are among the best i have ever read in a comedy manga and the last 4 are easily the worst. the teacher character, after the first chapter is just tedious... and unnecessary... he/she really ruined the manga for me, and absolutely killed the last 3 chapters specifically 10 for the first 4 8 for 5 and 6 3 for 7 2 for 8 1 for 9 my over all enjoyment of this is based on chapter 1-6... which honestly are that good that i recommend reading it solely on that alone.